Extended TyCon and friends to represent family declarations

[ghc-hetmet.git] / compiler / iface / MkIface.lhs

diff --git a/compiler/iface/MkIface.lhs b/compiler/iface/MkIface.lhs
index fa91a0a..7901f7c 100644 (file)
--- a/compiler/iface/MkIface.lhs
+++ b/compiler/iface/MkIface.lhs
@@ -185,7 +185,8 @@ import IdInfo               ( IdInfo, CafInfo(..), WorkerInfo(..),
 import NewDemand       ( isTopSig )
 import CoreSyn
 import Class           ( classExtraBigSig, classTyCon )
-import TyCon           ( TyCon, AlgTyConRhs(..), isRecursiveTyCon, isForeignTyCon,
+import TyCon           ( TyCon, AlgTyConRhs(..), SynTyConRhs(..),
+                         isRecursiveTyCon, isForeignTyCon, 
                          isSynTyCon, isAlgTyCon, isPrimTyCon, isFunTyCon,
                          isTupleTyCon, tupleTyConBoxity, tyConStupidTheta,
                          tyConHasGenerics, synTyConRhs, isGadtSyntaxTyCon,
@@ -1018,9 +1019,10 @@ tyThingToIfaceDecl ext (AClass clas)
 
 tyThingToIfaceDecl ext (ATyCon tycon)
   | isSynTyCon tycon
-  = IfaceSyn { ifName   = getOccName tycon,
-               ifTyVars = toIfaceTvBndrs tyvars,
-               ifSynRhs = toIfaceType ext syn_ty }
+  = IfaceSyn { ifName    = getOccName tycon,
+               ifTyVars  = toIfaceTvBndrs tyvars,
+               ifOpenSyn = syn_isOpen,
+               ifSynRhs  = toIfaceType ext syn_tyki }
 
   | isAlgTyCon tycon
   = IfaceData {        ifName    = getOccName tycon,
@@ -1048,10 +1050,16 @@ tyThingToIfaceDecl ext (ATyCon tycon)
   | otherwise = pprPanic "toIfaceDecl" (ppr tycon)
   where
     tyvars = tyConTyVars tycon
-    syn_ty = synTyConRhs tycon
-
-    ifaceConDecls (NewTyCon { data_con = con })    = IfNewTyCon  (ifaceConDecl con)
-    ifaceConDecls (DataTyCon { data_cons = cons }) = IfDataTyCon (map ifaceConDecl cons)
+    (syn_isOpen, syn_tyki) = case synTyConRhs tycon of
+                              OpenSynTyCon ki -> (True , ki)
+                              SynonymTyCon ty -> (False, ty)
+
+    ifaceConDecls (NewTyCon { data_con = con })    = 
+      IfNewTyCon  (ifaceConDecl con)
+    ifaceConDecls (DataTyCon { data_cons = cons }) = 
+      IfDataTyCon (map ifaceConDecl cons)
+    ifaceConDecls OpenDataTyCon                    = IfOpenDataTyCon
+    ifaceConDecls OpenNewTyCon                     = IfOpenNewTyCon
     ifaceConDecls AbstractTyCon                           = IfAbstractTyCon
        -- The last case happens when a TyCon has been trimmed during tidying
        -- Furthermore, tyThingToIfaceDecl is also used