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 5dbf4e7..7901f7c 100644 (file)
--- a/compiler/iface/MkIface.lhs
+++ b/compiler/iface/MkIface.lhs
@@ -11,8 +11,10 @@ module MkIface (
 
        writeIfaceFile, -- Write the interface file
 
-       checkOldIface   -- See if recompilation is required, by
+       checkOldIface,  -- See if recompilation is required, by
                        -- comparing version information
+
+        tyThingToIfaceDecl -- Converting things to their Iface equivalents
  ) where
 \end{code}
 
@@ -183,10 +185,11 @@ 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, tyConArgVrcs, synTyConRhs, isGadtSyntaxTyCon,
+                         tyConHasGenerics, synTyConRhs, isGadtSyntaxTyCon,
                          tyConArity, tyConTyVars, algTyConRhs, tyConExtName  )
 import DataCon         ( dataConName, dataConFieldLabels, dataConStrictMarks,
                          dataConTyCon, dataConIsInfix, dataConUnivTyVars, dataConExTyVars, dataConEqSpec,
@@ -197,6 +200,7 @@ import TysPrim              ( alphaTyVars )
 import InstEnv         ( Instance(..) )
 import TcRnMonad
 import HscTypes                ( ModIface(..), ModDetails(..), 
+                         ModGuts(..), HscEnv(..), hscEPS, Dependencies(..), FixItem(..),
                          ModSummary(..), msHiFilePath, 
                          mkIfaceDepCache, mkIfaceFixCache, mkIfaceVerCache,
                          typeEnvElts, 
@@ -208,7 +212,7 @@ import HscTypes             ( ModIface(..), ModDetails(..),
                        )
 
 
-import DynFlags                ( GhcMode(..), DynFlag(..), dopt )
+import DynFlags                ( GhcMode(..), DynFlags(..), DynFlag(..), dopt )
 import Name            ( Name, nameModule, nameOccName, nameParent,
                          isExternalName, isInternalName, nameParent_maybe, isWiredInName,
                          isImplicitName, NamedThing(..) )
@@ -994,8 +998,7 @@ tyThingToIfaceDecl ext (AClass clas)
                 ifTyVars = toIfaceTvBndrs clas_tyvars,
                 ifFDs    = map toIfaceFD clas_fds,
                 ifSigs   = map toIfaceClassOp op_stuff,
-                ifRec    = boolToRecFlag (isRecursiveTyCon tycon),
-                ifVrcs   = tyConArgVrcs tycon }
+                ifRec    = boolToRecFlag (isRecursiveTyCon tycon) }
   where
     (clas_tyvars, clas_fds, sc_theta, _, op_stuff) = classExtraBigSig clas
     tycon = classTyCon clas
@@ -1012,14 +1015,14 @@ tyThingToIfaceDecl ext (AClass clas)
          (sel_tyvars, rho_ty) = splitForAllTys (idType sel_id)
          op_ty                = funResultTy rho_ty
 
-    toIfaceFD (tvs1, tvs2) = (map getOccName tvs1, map getOccName tvs2)
+    toIfaceFD (tvs1, tvs2) = (map (occNameFS.getOccName) tvs1, map (occNameFS.getOccName) tvs2)
 
 tyThingToIfaceDecl ext (ATyCon tycon)
   | isSynTyCon tycon
-  = IfaceSyn { ifName   = getOccName tycon,
-               ifTyVars = toIfaceTvBndrs tyvars,
-               ifVrcs    = tyConArgVrcs tycon,
-               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,
@@ -1028,7 +1031,6 @@ tyThingToIfaceDecl ext (ATyCon tycon)
                ifCons    = ifaceConDecls (algTyConRhs tycon),
                ifRec     = boolToRecFlag (isRecursiveTyCon tycon),
                ifGadtSyntax = isGadtSyntaxTyCon tycon,
-               ifVrcs    = tyConArgVrcs tycon,
                ifGeneric = tyConHasGenerics tycon }
 
   | isForeignTyCon tycon
@@ -1043,16 +1045,21 @@ tyThingToIfaceDecl ext (ATyCon tycon)
                ifCons    = IfAbstractTyCon,
                ifGadtSyntax = False,
                ifGeneric = False,
-               ifRec     = NonRecursive,
-               ifVrcs    = tyConArgVrcs tycon }
+               ifRec     = NonRecursive}
 
   | 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
@@ -1179,7 +1186,7 @@ toIfaceExpr ext (Lit l)       = IfaceLit l
 toIfaceExpr ext (Type ty)     = IfaceType (toIfaceType ext ty)
 toIfaceExpr ext (Lam x b)     = IfaceLam (toIfaceBndr ext x) (toIfaceExpr ext b)
 toIfaceExpr ext (App f a)     = toIfaceApp ext f [a]
-toIfaceExpr ext (Case s x ty as) = IfaceCase (toIfaceExpr ext s) (getOccName x) (toIfaceType ext ty) (map (toIfaceAlt ext) as)
+toIfaceExpr ext (Case s x ty as) = IfaceCase (toIfaceExpr ext s) (occNameFS (getOccName x)) (toIfaceType ext ty) (map (toIfaceAlt ext) as)
 toIfaceExpr ext (Let b e)     = IfaceLet (toIfaceBind ext b) (toIfaceExpr ext e)
 toIfaceExpr ext (Cast e co)   = IfaceCast (toIfaceExpr ext e) (toIfaceType ext co)
 toIfaceExpr ext (Note n e)    = IfaceNote (toIfaceNote ext n) (toIfaceExpr ext e)
@@ -1194,7 +1201,7 @@ toIfaceBind ext (NonRec b r) = IfaceNonRec (toIfaceIdBndr ext b) (toIfaceExpr ex
 toIfaceBind ext (Rec prs)    = IfaceRec [(toIfaceIdBndr ext b, toIfaceExpr ext r) | (b,r) <- prs]
 
 ---------------------
-toIfaceAlt ext (c,bs,r) = (toIfaceCon c, map getOccName bs, toIfaceExpr ext r)
+toIfaceAlt ext (c,bs,r) = (toIfaceCon c, map (occNameFS.getOccName) bs, toIfaceExpr ext r)
 
 ---------------------
 toIfaceCon (DataAlt dc) | isTupleTyCon tc = IfaceTupleAlt (tupleTyConBoxity tc)
@@ -1230,7 +1237,7 @@ toIfaceVar ext v
   | Just fcall <- isFCallId_maybe v = IfaceFCall fcall (toIfaceType ext (idType v))
          -- Foreign calls have special syntax
   | isExternalName name                    = IfaceExt (ext name)
-  | otherwise                      = IfaceLcl (nameOccName name)
+  | otherwise                      = IfaceLcl (occNameFS (nameOccName name))
   where
     name = idName v
 \end{code}