Use a different approach for marking SigUses.

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

diff --git a/Translator.hs b/Translator.hs
index 9ce7206c9df9bd841bd0c5a4e7cccabe1d392b3f..c16406be3aef2781484251c56a21d3e5fb394f54 100644 (file)
--- a/Translator.hs
+++ b/Translator.hs
@@ -1,5 +1,5 @@
 module Translator where
-import GHC
+import GHC hiding (loadModule)
 import CoreSyn
 import qualified CoreUtils
 import qualified Var
@@ -13,6 +13,7 @@ import Name
 import qualified Data.Map as Map
 import Data.Generics
 import NameEnv ( lookupNameEnv )
+import qualified HscTypes
 import HscTypes ( cm_binds, cm_types )
 import MonadUtils ( liftIO )
 import Outputable ( showSDoc, ppr )
@@ -40,28 +41,36 @@ import FlattenTypes
 import VHDLTypes
 import qualified VHDL
 
-main = 
-    do
-      defaultErrorHandler defaultDynFlags $ do
-        runGhc (Just libdir) $ do
-          dflags <- getSessionDynFlags
-          setSessionDynFlags dflags
-          --target <- guessTarget "adder.hs" Nothing
-          --liftIO (print (showSDoc (ppr (target))))
-          --liftIO $ printTarget target
-          --setTargets [target]
-          --load LoadAllTargets
-          --core <- GHC.compileToCoreSimplified "Adders.hs"
-          core <- GHC.compileToCoreSimplified "Adders.hs"
-          --liftIO $ printBinds (cm_binds core)
-          let binds = Maybe.mapMaybe (findBind (cm_binds core)) ["sfull_adder"]
-          liftIO $ putStr $ prettyShow binds
-          -- Turn bind into VHDL
-          let (vhdl, sess) = State.runState (mkVHDL binds) (VHDLSession core 0 Map.empty)
-          liftIO $ putStr $ render $ ForSyDe.Backend.Ppr.ppr vhdl
-          liftIO $ ForSyDe.Backend.VHDL.FileIO.writeDesignFile vhdl "../vhdl/vhdl/output.vhdl"
-          liftIO $ putStr $ "\n\nFinal session:\n" ++ prettyShow sess ++ "\n\n"
-          return ()
+main = do
+  -- Load the module
+  core <- loadModule "Adders.hs"
+  -- Translate to VHDL
+  vhdl <- moduleToVHDL core ["dff"]
+  -- Write VHDL to file
+  writeVHDL vhdl "../vhdl/vhdl/output.vhdl"
+
+-- | Show the core structure of the given binds in the given file.
+listBind :: String -> String -> IO ()
+listBind filename name = do
+  core <- loadModule filename
+  let binds = findBinds core [name]
+  putStr "\n"
+  putStr $ prettyShow binds
+  putStr "\n\n"
+
+-- | Translate the binds with the given names from the given core module to
+--   VHDL
+moduleToVHDL :: HscTypes.CoreModule -> [String] -> IO AST.DesignFile
+moduleToVHDL core names = do
+  --liftIO $ putStr $ prettyShow (cm_binds core)
+  let binds = findBinds core names
+  --putStr $ prettyShow binds
+  -- Turn bind into VHDL
+  let (vhdl, sess) = State.runState (mkVHDL binds) (VHDLSession core 0 Map.empty)
+  putStr $ render $ ForSyDe.Backend.Ppr.ppr vhdl
+  putStr $ "\n\nFinal session:\n" ++ prettyShow sess ++ "\n\n"
+  return vhdl
+
   where
     -- Turns the given bind into VHDL
     mkVHDL binds = do
@@ -72,14 +81,33 @@ main =
       modFuncs nameFlatFunction
       modFuncs VHDL.createEntity
       modFuncs VHDL.createArchitecture
-      -- Extract the library units generated from all the functions in the
-      -- session.
-      funcs <- getFuncs
-      let units = concat $ map VHDL.getLibraryUnits funcs
-      return $ AST.DesignFile 
-        []
-        units
+      VHDL.getDesignFile
+
+-- | Write the given design file to the given file
+writeVHDL :: AST.DesignFile -> String -> IO ()
+writeVHDL = ForSyDe.Backend.VHDL.FileIO.writeDesignFile
+
+-- | Loads the given file and turns it into a core module.
+loadModule :: String -> IO HscTypes.CoreModule
+loadModule filename =
+  defaultErrorHandler defaultDynFlags $ do
+    runGhc (Just libdir) $ do
+      dflags <- getSessionDynFlags
+      setSessionDynFlags dflags
+      --target <- guessTarget "adder.hs" Nothing
+      --liftIO (print (showSDoc (ppr (target))))
+      --liftIO $ printTarget target
+      --setTargets [target]
+      --load LoadAllTargets
+      --core <- GHC.compileToCoreSimplified "Adders.hs"
+      core <- GHC.compileToCoreSimplified filename
+      return core
+
+-- | Extracts the named binds from the given module.
+findBinds :: HscTypes.CoreModule -> [String] -> [CoreBind]
+findBinds core names = Maybe.mapMaybe (findBind (cm_binds core)) names
 
+-- | Extract a named bind from the given list of binds
 findBind :: [CoreBind] -> String -> Maybe CoreBind
 findBind binds lookfor =
   -- This ignores Recs and compares the name of the bind with lookfor,
@@ -117,7 +145,7 @@ flattenBind hsfunc bind@(NonRec var expr) = do
   let flatfunc = flattenFunction hsfunc bind
   addFunc hsfunc
   setFlatFunc hsfunc flatfunc
-  let used_hsfuncs = map appFunc (flat_apps flatfunc)
+  let used_hsfuncs = Maybe.mapMaybe usedHsFunc (flat_defs flatfunc)
   State.mapM resolvFunc used_hsfuncs
   return ()
 
@@ -215,7 +243,7 @@ data BuiltIn = BuiltIn String [PortMap] PortMap
 -- | Map a port specification of a builtin function to a VHDL Signal to put in
 --   a VHDLSignalMap
 toVHDLSignalMap :: HsValueMap (String, AST.TypeMark) -> VHDLSignalMap
-toVHDLSignalMap = fmap (\(name, ty) -> (VHDL.mkVHDLId name, ty))
+toVHDLSignalMap = fmap (\(name, ty) -> Just (VHDL.mkVHDLId name, ty))
 
 -- | Translate a concise representation of a builtin function to something
 --   that can be put into FuncMap directly.