Store signals in a map.

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

diff --git a/FlattenTypes.hs b/FlattenTypes.hs
index 49ca8c04533cbeab1616846c7ff1e5c1da2ac1bb..7838dcdcbc28563fa7f77d54063e21183b9a3cd6 100644 (file)
--- a/FlattenTypes.hs
+++ b/FlattenTypes.hs
@@ -75,8 +75,8 @@ data CondDef sigid = CondDef {
 } deriving (Show, Eq)
 
 -- | Information on a signal definition
-data Signal sigid = Signal {
-  id :: sigid
+data SignalInfo = SignalInfo {
+  name :: Maybe String
 } deriving (Eq, Show)
 
 -- | A flattened function
@@ -85,7 +85,7 @@ data FlatFunction' sigid = FlatFunction {
   res    :: SignalMap sigid,
   apps   :: [FApp sigid],
   conds  :: [CondDef sigid],
-  sigs   :: [Signal sigid]
+  sigs   :: [(sigid, SignalInfo)]
 } deriving (Show, Eq)
 
 -- | A flat function that does not have its signals named
@@ -104,24 +104,25 @@ type BindMap = [(
   )]
 
 -- | The state during the flattening of a single function
-type FlattenState = State.State ([FApp UnnamedSignal], [CondDef UnnamedSignal], UnnamedSignal)
+type FlattenState = State.State ([FApp UnnamedSignal], [CondDef UnnamedSignal], [(UnnamedSignal, SignalInfo)], UnnamedSignal)
 
 -- | Add an application to the current FlattenState
 addApp :: (FApp UnnamedSignal) -> FlattenState ()
 addApp a = do
-  (apps, conds, n) <- State.get
-  State.put (a:apps, conds, n)
+  (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 c = do
-  (apps, conds, n) <- State.get
-  State.put (apps, c:conds, n)
+  (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 :: FlattenState UnnamedSignal 
 genSignalId = do
-  (apps, conds, n) <- State.get
-  State.put (apps, conds, n+1)
+  (apps, conds, sigs, n) <- State.get
+  -- Generate a new numbered but unnamed signal
+  let s = (n, SignalInfo Nothing)
+  State.put (apps, conds, s:sigs, n+1)
   return n
-