import HsValueMap
-- | A signal identifier
-type UnnamedSignal = Int
+type SignalId = Int
-- | A map of a Haskell value to signal ids
-type SignalMap sigid = HsValueMap sigid
+type SignalMap = HsValueMap SignalId
-- | How is a given (single) value in a function's type (ie, argument or
-- return value) used?
|| Foldable.any isStateUse (hsFuncRes hsfunc)
-- | A flattened function application
-data FApp sigid = FApp {
+data FApp = FApp {
appFunc :: HsFunction,
- appArgs :: [SignalMap sigid],
- appRes :: SignalMap sigid
+ appArgs :: [SignalMap],
+ appRes :: SignalMap
} deriving (Show, Eq)
-- | A conditional signal definition
-data CondDef sigid = CondDef {
- cond :: sigid,
- high :: sigid,
- low :: sigid,
- condRes :: sigid
+data CondDef = CondDef {
+ cond :: SignalId,
+ high :: SignalId,
+ low :: SignalId,
+ condRes :: SignalId
} deriving (Show, Eq)
-- | How is a given signal used in the resulting VHDL?
}
-- | A flattened function
-data FlatFunction' sigid = FlatFunction {
- flat_args :: [SignalMap sigid],
- flat_res :: SignalMap sigid,
- flat_apps :: [FApp sigid],
- flat_conds :: [CondDef sigid],
- flat_sigs :: [(sigid, SignalInfo)]
+data FlatFunction = FlatFunction {
+ flat_args :: [SignalMap],
+ flat_res :: SignalMap,
+ flat_apps :: [FApp],
+ flat_conds :: [CondDef],
+ flat_sigs :: [(SignalId, SignalInfo)]
}
-- | Lookup a given signal id in a signal map, and return the associated
-- SignalInfo. Errors out if the signal was not found.
-signalInfo :: Eq sigid => [(sigid, SignalInfo)] -> sigid -> SignalInfo
+signalInfo :: [(SignalId, SignalInfo)] -> SignalId -> SignalInfo
signalInfo sigs id = Maybe.fromJust $ lookup id sigs
--- | A flat function that does not have its signals named
-type FlatFunction = FlatFunction' UnnamedSignal
-
-- | A list of binds in effect at a particular point of evaluation
type BindMap = [(
CoreBndr, -- ^ The bind name
Either -- ^ The bind value which is either
- (SignalMap UnnamedSignal)
+ (SignalMap)
-- ^ a signal
(
HsValueUse, -- ^ or a HighOrder function
- [UnnamedSignal] -- ^ With these signals already applied to it
+ [SignalId] -- ^ With these signals already applied to it
)
)]
-- | The state during the flattening of a single function
-type FlattenState = State.State ([FApp UnnamedSignal], [CondDef UnnamedSignal], [(UnnamedSignal, SignalInfo)], UnnamedSignal)
+type FlattenState = State.State ([FApp], [CondDef], [(SignalId, SignalInfo)], SignalId)
-- | Add an application to the current FlattenState
-addApp :: (FApp UnnamedSignal) -> FlattenState ()
+addApp :: (FApp) -> FlattenState ()
addApp a = do
(apps, conds, sigs, n) <- State.get
State.put (a:apps, conds, sigs, n)
-- | Add a conditional definition to the current FlattenState
-addCondDef :: (CondDef UnnamedSignal) -> FlattenState ()
+addCondDef :: (CondDef) -> FlattenState ()
addCondDef c = do
(apps, conds, sigs, n) <- State.get
State.put (apps, c:conds, sigs, n)
-- | Generates a new signal id, which is unique within the current flattening.
-genSignalId :: SigUse -> Type.Type -> FlattenState UnnamedSignal
+genSignalId :: SigUse -> Type.Type -> FlattenState SignalId
genSignalId use ty = do
(apps, conds, sigs, n) <- State.get
-- Generate a new numbered but unnamed signal