-
-
-data FlatFunction = FlatFunction {
- args :: [SignalDefMap],
- res :: SignalUseMap,
- --sigs :: [SignalDef],
- apps :: [FApp],
- conds :: [CondDef]
-} deriving (Show, Eq)
-
-type SignalUseMap = HsValueMap SignalUse
-type SignalDefMap = HsValueMap SignalDef
-
-useMapToDefMap :: SignalUseMap -> SignalDefMap
-useMapToDefMap = fmap (\(SignalUse u) -> SignalDef u)
-
-defMapToUseMap :: SignalDefMap -> SignalUseMap
-defMapToUseMap = fmap (\(SignalDef u) -> SignalUse u)
-
-
-type SignalId = Int
-data SignalUse = SignalUse {
- sigUseId :: SignalId
-} deriving (Show, Eq)
-
-data SignalDef = SignalDef {
- sigDefId :: SignalId
-} deriving (Show, Eq)
-
-data FApp = FApp {
- appFunc :: HsFunction,
- appArgs :: [SignalUseMap],
- appRes :: SignalDefMap
-} deriving (Show, Eq)
-
-data CondDef = CondDef {
- cond :: SignalUse,
- high :: SignalUse,
- low :: SignalUse,
- condRes :: SignalDef
-} deriving (Show, Eq)
-
--- | How is a given (single) value in a function's type (ie, argument or
--- return value) used?
-data HsValueUse =
- Port -- ^ Use it as a port (input or output)
- | State Int -- ^ Use it as state (input or output). The int is used to
- -- match input state to output state.
- | HighOrder { -- ^ Use it as a high order function input
- hoName :: String, -- ^ Which function is passed in?
- hoArgs :: [HsUseMap] -- ^ Which arguments are already applied? This
- -- ^ map should only contain Port and other
- -- HighOrder values.
- }
- deriving (Show, Eq)
-
-type HsUseMap = HsValueMap HsValueUse
-
--- | Builds a HsUseMap with the same structure has the given HsValueMap in
--- which all the Single elements are marked as State, with increasing state
--- numbers.
-useAsState :: HsValueMap a -> HsUseMap
-useAsState map =
- map'
- where
- -- Traverse the existing map, resulting in a function that maps an initial
- -- state number to the final state number and the new map
- PassState f = traverse asState map
- -- Run this function to get the new map
- (_, map') = f 0
- -- This function maps each element to a State with a unique number, by
- -- incrementing the state count.
- asState x = PassState (\s -> (s+1, State s))
-
--- | Builds a HsUseMap with the same structure has the given HsValueMap in
--- which all the Single elements are marked as Port.
-useAsPort :: HsValueMap a -> HsUseMap
-useAsPort map = fmap (\x -> Port) map
-
-data HsFunction = HsFunction {
- hsFuncName :: String,
- hsFuncArgs :: [HsUseMap],
- hsFuncRes :: HsUseMap
-} deriving (Show, Eq)
-
-type BindMap = [(
- CoreBndr, -- ^ The bind name
- Either -- ^ The bind value which is either
- SignalUseMap -- ^ a signal
- (
- HsValueUse, -- ^ or a HighOrder function
- [SignalUse] -- ^ With these signals already applied to it
- )
- )]
-
-type FlattenState = State.State ([FApp], [CondDef], SignalId)
-
--- | Add an application to the current FlattenState
-addApp :: FApp -> FlattenState ()
-addApp a = do
- (apps, conds, n) <- State.get
- State.put (a:apps, conds, n)
-
--- | Add a conditional definition to the current FlattenState
-addCondDef :: CondDef -> FlattenState ()
-addCondDef c = do
- (apps, conds, n) <- State.get
- State.put (apps, c:conds, n)
-
--- | Generates a new signal id, which is unique within the current flattening.
-genSignalId :: FlattenState SignalId
-genSignalId = do
- (apps, conds, n) <- State.get
- State.put (apps, conds, n+1)
- return n
-
-genSignalUses ::