From 1f0b33729534d451d7dcc46d4614d1a12b31ea82 Mon Sep 17 00:00:00 2001
From: Matthijs Kooijman <m.kooijman@student.utwente.nl>
Date: Wed, 11 Feb 2009 20:07:46 +0100
Subject: [PATCH] Add a list of used signals to FlatFunction.

---
 Flatten.hs      | 2 +-
 FlattenTypes.hs | 9 +++++++--
 Pretty.hs       | 6 +++++-
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/Flatten.hs b/Flatten.hs
index 15f9980..1297793 100644
--- a/Flatten.hs
+++ b/Flatten.hs
@@ -53,7 +53,7 @@ flattenFunction ::
 
 flattenFunction _ (Rec _) = error "Recursive binders not supported"
 flattenFunction hsfunc bind@(NonRec var expr) =
-  FlatFunction args res apps conds
+  FlatFunction args res apps conds []
   where
     init_state        = ([], [], 0)
     (fres, end_state) = State.runState (flattenExpr [] expr) init_state
diff --git a/FlattenTypes.hs b/FlattenTypes.hs
index 3389a5b..49ca8c0 100644
--- a/FlattenTypes.hs
+++ b/FlattenTypes.hs
@@ -74,13 +74,18 @@ data CondDef sigid = CondDef {
   condRes :: sigid
 } deriving (Show, Eq)
 
+-- | Information on a signal definition
+data Signal sigid = Signal {
+  id :: sigid
+} deriving (Eq, Show)
+
 -- | A flattened function
 data FlatFunction' sigid = FlatFunction {
   args   :: [SignalMap sigid],
   res    :: SignalMap sigid,
-  --sigs   :: [Signal],
   apps   :: [FApp sigid],
-  conds  :: [CondDef sigid]
+  conds  :: [CondDef sigid],
+  sigs   :: [Signal sigid]
 } deriving (Show, Eq)
 
 -- | A flat function that does not have its signals named
diff --git a/Pretty.hs b/Pretty.hs
index 22862d5..74ffec7 100644
--- a/Pretty.hs
+++ b/Pretty.hs
@@ -28,11 +28,12 @@ instance Pretty HsValueUse where
   pPrint (HighOrder _ _) = text "Higher Order"
 
 instance Pretty id => Pretty (FlatFunction' id) where
-  pPrint (FlatFunction args res apps conds) =
+  pPrint (FlatFunction args res apps conds sigs) =
     (text "Args: ") $$ nest 10 (pPrint args)
     $+$ (text "Result: ") $$ nest 10 (pPrint res)
     $+$ (text "Apps: ") $$ nest 10 (vcat (map pPrint apps))
     $+$ (text "Conds: ") $$ nest 10 (pPrint conds)
+    $+$ text "Signals: " $$ nest 10 (pPrint sigs)
 
 instance Pretty id => Pretty (FApp id) where
   pPrint (FApp func args res) =
@@ -41,6 +42,9 @@ instance Pretty id => Pretty (FApp id) where
 instance Pretty id => Pretty (CondDef id) where
   pPrint _ = text "TODO"
 
+instance Pretty id => Pretty (Signal id) where
+  pPrint (Signal id) = pPrint id
+
 instance Pretty VHDLSession where
   pPrint (VHDLSession mod nameCount funcs) =
     text "Module: " $$ nest 15 (text modname)
-- 
2.30.2