[project @ 2000-05-25 12:41:14 by simonpj]

[ghc-hetmet.git] / ghc / compiler / rename / RnHsSyn.lhs

diff --git a/ghc/compiler/rename/RnHsSyn.lhs b/ghc/compiler/rename/RnHsSyn.lhs
index ca4a34a..60dfedb 100644 (file)
--- a/ghc/compiler/rename/RnHsSyn.lhs
+++ b/ghc/compiler/rename/RnHsSyn.lhs
@@ -8,44 +8,44 @@ module RnHsSyn where
 
 #include "HsVersions.h"
 
-import RnEnv           ( listTyCon_name, tupleTyCon_name )
-
 import HsSyn
 import HsPragmas       ( InstancePragmas, GenPragmas, DataPragmas, ClassPragmas, ClassOpPragmas )
 
-import BasicTypes      ( Unused )
-import Name            ( Name )
+import TysWiredIn      ( tupleTyCon, listTyCon, charTyCon )
+import Name            ( Name, getName )
 import NameSet
+import BasicTypes      ( Boxity )
 import Util
 import Outputable
 \end{code}
 
 
 \begin{code}
-type RenamedArithSeqInfo       = ArithSeqInfo          Unused Name RenamedPat
-type RenamedClassDecl          = ClassDecl             Unused Name RenamedPat
+type RenamedArithSeqInfo       = ArithSeqInfo          Name RenamedPat
 type RenamedClassOpSig         = Sig                   Name
 type RenamedConDecl            = ConDecl               Name
-type RenamedContext            = Context               Name
-type RenamedHsDecl             = HsDecl                Unused Name RenamedPat
+type RenamedContext            = HsContext             Name
+type RenamedHsDecl             = HsDecl                Name RenamedPat
+type RenamedRuleDecl           = RuleDecl              Name RenamedPat
+type RenamedTyClDecl           = TyClDecl              Name RenamedPat
 type RenamedSpecDataSig                = SpecDataSig           Name
 type RenamedDefaultDecl                = DefaultDecl           Name
 type RenamedForeignDecl                = ForeignDecl           Name
-type RenamedFixityDecl         = FixityDecl            Name
-type RenamedGRHS               = GRHS                  Unused Name RenamedPat
-type RenamedGRHSsAndBinds      = GRHSsAndBinds         Unused Name RenamedPat
-type RenamedHsBinds            = HsBinds               Unused Name RenamedPat
-type RenamedHsExpr             = HsExpr                Unused Name RenamedPat
-type RenamedHsModule           = HsModule              Unused Name RenamedPat
-type RenamedInstDecl           = InstDecl              Unused Name RenamedPat
-type RenamedMatch              = Match                 Unused Name RenamedPat
-type RenamedMonoBinds          = MonoBinds             Unused Name RenamedPat
+type RenamedGRHS               = GRHS                  Name RenamedPat
+type RenamedGRHSs              = GRHSs                 Name RenamedPat
+type RenamedHsBinds            = HsBinds               Name RenamedPat
+type RenamedHsExpr             = HsExpr                Name RenamedPat
+type RenamedHsModule           = HsModule              Name RenamedPat
+type RenamedInstDecl           = InstDecl              Name RenamedPat
+type RenamedMatch              = Match                 Name RenamedPat
+type RenamedMonoBinds          = MonoBinds             Name RenamedPat
 type RenamedPat                        = InPat                 Name
 type RenamedHsType             = HsType                Name
-type RenamedRecordBinds                = HsRecordBinds         Unused Name RenamedPat
+type RenamedRecordBinds                = HsRecordBinds         Name RenamedPat
 type RenamedSig                        = Sig                   Name
-type RenamedStmt               = Stmt                  Unused Name RenamedPat
-type RenamedTyDecl             = TyDecl                Name
+type RenamedStmt               = Stmt                  Name RenamedPat
+type RenamedFixitySig          = FixitySig             Name
+type RenamedDeprecation                = DeprecDecl            Name
 
 type RenamedClassOpPragmas     = ClassOpPragmas        Name
 type RenamedClassPragmas       = ClassPragmas          Name
@@ -63,28 +63,44 @@ type RenamedInstancePragmas = InstancePragmas       Name
 These free-variable finders returns tycons and classes too.
 
 \begin{code}
+charTyCon_name, listTyCon_name :: Name
+charTyCon_name    = getName charTyCon
+listTyCon_name    = getName listTyCon
+
+tupleTyCon_name :: Boxity -> Int -> Name
+tupleTyCon_name boxity n = getName (tupleTyCon boxity n)
+
 extractHsTyNames   :: RenamedHsType -> NameSet
 extractHsTyNames ty
   = get ty
   where
-    get (MonoTyApp ty1 ty2)      = get ty1 `unionNameSets` get ty2
-    get (MonoListTy ty)          = unitNameSet listTyCon_name 
+    get (HsAppTy ty1 ty2)      = get ty1 `unionNameSets` get ty2
+    get (HsListTy ty)          = unitNameSet listTyCon_name 
                                   `unionNameSets` get ty
-    get (MonoTupleTy tys boxed)  = unitNameSet (tupleTyCon_name boxed (length tys)) 
-                                  `unionNameSets` extractHsTyNames_s tys
-    get (MonoFunTy ty1 ty2)      = get ty1 `unionNameSets` get ty2
-    get (MonoDictTy cls tys)     = unitNameSet cls `unionNameSets` extractHsTyNames_s tys
-    get (MonoTyVar tv)          = unitNameSet tv
-    get (HsForAllTy tvs ctxt ty) = (extractHsCtxtTyNames ctxt `unionNameSets` get ty)
+    get (HsTupleTy (HsTupCon n _) tys) = unitNameSet n
+                                        `unionNameSets` extractHsTyNames_s tys
+    get (HsFunTy ty1 ty2)      = get ty1 `unionNameSets` get ty2
+    get (HsPredTy p)          = extractHsPredTyNames p
+    get (HsUsgForAllTy uv ty)  = get ty
+    get (HsUsgTy u ty)         = get ty
+    get (HsTyVar tv)          = unitNameSet tv
+    get (HsForAllTy (Just tvs) 
+                   ctxt ty)   = (extractHsCtxtTyNames ctxt `unionNameSets` get ty)
                                            `minusNameSet`
                                    mkNameSet (map getTyVarName tvs)
+    get ty@(HsForAllTy Nothing _ _) = pprPanic "extractHsTyNames" (ppr ty)
 
 extractHsTyNames_s  :: [RenamedHsType] -> NameSet
 extractHsTyNames_s tys = foldr (unionNameSets . extractHsTyNames) emptyNameSet tys
 
 extractHsCtxtTyNames :: RenamedContext -> NameSet
-extractHsCtxtTyNames ctxt = foldr (unionNameSets . get) emptyNameSet ctxt
-  where
-    get (cls, tys) = unitNameSet cls `unionNameSets` extractHsTyNames_s tys
+extractHsCtxtTyNames ctxt = foldr (unionNameSets . extractHsPredTyNames) emptyNameSet ctxt
+
+-- You don't import or export implicit parameters, so don't mention
+-- the IP names
+extractHsPredTyNames (HsPClass cls tys)
+  = unitNameSet cls `unionNameSets` extractHsTyNames_s tys
+extractHsPredTyNames (HsPIParam n ty)
+  = extractHsTyNames ty
 \end{code}