1 module Translator where
4 import qualified CoreUtils
8 import qualified DataCon
10 import qualified Module
11 import qualified Control.Monad.State as State
14 import NameEnv ( lookupNameEnv )
15 import HscTypes ( cm_binds, cm_types )
16 import MonadUtils ( liftIO )
17 import Outputable ( showSDoc, ppr )
18 import GHC.Paths ( libdir )
19 import DynFlags ( defaultDynFlags )
22 import qualified Monad
24 -- The following modules come from the ForSyDe project. They are really
25 -- internal modules, so ForSyDe.cabal has to be modified prior to installing
26 -- ForSyDe to get access to these modules.
27 import qualified ForSyDe.Backend.VHDL.AST as AST
28 import qualified ForSyDe.Backend.VHDL.Ppr
29 import qualified ForSyDe.Backend.VHDL.FileIO
30 import qualified ForSyDe.Backend.Ppr
31 -- This is needed for rendering the pretty printed VHDL
32 import Text.PrettyPrint.HughesPJ (render)
34 import TranslatorTypes
41 defaultErrorHandler defaultDynFlags $ do
42 runGhc (Just libdir) $ do
43 dflags <- getSessionDynFlags
44 setSessionDynFlags dflags
45 --target <- guessTarget "adder.hs" Nothing
46 --liftIO (print (showSDoc (ppr (target))))
47 --liftIO $ printTarget target
50 --core <- GHC.compileToCoreSimplified "Adders.hs"
51 core <- GHC.compileToCoreSimplified "Adders.hs"
52 --liftIO $ printBinds (cm_binds core)
53 let binds = Maybe.mapMaybe (findBind (cm_binds core)) ["sfull_adder"]
54 liftIO $ printBinds binds
55 -- Turn bind into VHDL
56 let (vhdl, sess) = State.runState (mkVHDL binds) (VHDLSession 0 [])
57 liftIO $ putStr $ render $ ForSyDe.Backend.Ppr.ppr vhdl
58 liftIO $ ForSyDe.Backend.VHDL.FileIO.writeDesignFile vhdl "../vhdl/vhdl/output.vhdl"
59 liftIO $ putStr $ "\n\nFinal session:\n" ++ prettyShow sess ++ "\n\n"
62 -- Turns the given bind into VHDL
64 -- Add the builtin functions
65 --mapM (uncurry addFunc) builtin_funcs
66 -- Create entities and architectures for them
67 mapM flattenBind binds
68 return $ AST.DesignFile
72 printTarget (Target (TargetFile file (Just x)) obj Nothing) =
75 printBinds [] = putStr "done\n\n"
76 printBinds (b:bs) = do
81 printBind (NonRec b expr) = do
85 printBind (Rec binds) = do
87 foldl1 (>>) (map printBind' binds)
89 printBind' (b, expr) = do
90 putStr $ getOccString b
91 putStr $ showSDoc $ ppr expr
94 findBind :: [CoreBind] -> String -> Maybe CoreBind
95 findBind binds lookfor =
96 -- This ignores Recs and compares the name of the bind with lookfor,
97 -- disregarding any namespaces in OccName and extra attributes in Name and
101 NonRec var _ -> lookfor == (occNameString $ nameOccName $ getName var)
104 -- | Flattens the given bind and adds it to the session. Then (recursively)
105 -- finds any functions it uses and does the same with them.
107 CoreBind -- The binder to flatten
110 flattenBind (Rec _) = error "Recursive binders not supported"
112 flattenBind bind@(NonRec var expr) = do
113 -- Create the function signature
114 let ty = CoreUtils.exprType expr
115 let hsfunc = mkHsFunction var ty
116 --hwfunc <- mkHWFunction bind hsfunc
117 -- Add it to the session
118 --addFunc hsfunc hwfunc
119 let flatfunc = flattenFunction hsfunc bind
120 addFunc hsfunc flatfunc
121 let used_hsfuncs = map appFunc (apps flatfunc)
122 State.mapM resolvFunc used_hsfuncs
125 -- | Find the given function, flatten it and add it to the session. Then
126 -- (recursively) do the same for any functions used.
128 HsFunction -- | The function to look for
134 -- | Translate a top level function declaration to a HsFunction. i.e., which
135 -- interface will be provided by this function. This function essentially
136 -- defines the "calling convention" for hardware models.
138 Var.Var -- ^ The function defined
139 -> Type -- ^ The function type (including arguments!)
140 -> HsFunction -- ^ The resulting HsFunction
143 HsFunction hsname hsargs hsres
145 hsname = getOccString f
146 (arg_tys, res_ty) = Type.splitFunTys ty
147 -- The last argument must be state
148 state_ty = last arg_tys
149 state = useAsState (mkHsValueMap state_ty)
150 -- All but the last argument are inports
151 inports = map (useAsPort . mkHsValueMap)(init arg_tys)
152 hsargs = inports ++ [state]
153 hsres = case splitTupleType res_ty of
154 -- Result type must be a two tuple (state, ports)
155 Just [outstate_ty, outport_ty] -> if Type.coreEqType state_ty outstate_ty
157 Tuple [state, useAsPort (mkHsValueMap outport_ty)]
159 error $ "Input state type of function " ++ hsname ++ ": " ++ (showSDoc $ ppr state_ty) ++ " does not match output state type: " ++ (showSDoc $ ppr outstate_ty)
160 otherwise -> error $ "Return type of top-level function " ++ hsname ++ " must be a two-tuple containing a state and output ports."
162 -- | Splits a tuple type into a list of element types, or Nothing if the type
163 -- is not a tuple type.
165 Type -- ^ The type to split
166 -> Maybe [Type] -- ^ The tuples element types
169 case Type.splitTyConApp_maybe ty of
170 Just (tycon, args) -> if TyCon.isTupleTyCon tycon
177 -- vim: set ts=8 sw=2 sts=2 expandtab: