Add ASSERTs to all calls of nameModule

[ghc-hetmet.git] / compiler / types / Generics.lhs

diff --git a/compiler/types/Generics.lhs b/compiler/types/Generics.lhs
index 4f37831..01632d3 100644 (file)
--- a/compiler/types/Generics.lhs
+++ b/compiler/types/Generics.lhs
@@ -1,4 +1,15 @@
+%
+% (c) The University of Glasgow 2006
+%
+
 \begin{code}
+{-# OPTIONS -fno-warn-incomplete-patterns #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and fix
+-- any warnings in the module. See
+--     http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
+-- for details
+
 module Generics ( canDoGenerics, mkTyConGenericBinds,
                  mkGenericRhs, 
                  validGenericInstanceType, validGenericMethodType
@@ -6,30 +17,24 @@ module Generics ( canDoGenerics, mkTyConGenericBinds,
 
 
 import HsSyn
-import Type             ( Type, isUnLiftedType, tyVarsOfType,
-                         isTyVarTy, getTyVar_maybe, funTyCon
-                       )
-import TcHsSyn         ( mkSimpleHsAlt )
-import TcType          ( tcSplitTyConApp_maybe, tcSplitSigmaTy, tcSplitPhiTy, applyTy, 
-                         isTauTy, mkTyVarTy )
-import DataCon          ( DataCon, dataConOrigArgTys, isVanillaDataCon,
-                         dataConSourceArity )
-
-import TyCon            ( TyCon, tyConName, tyConDataCons, 
-                         isBoxedTupleTyCon
-                       )
-import Name            ( nameModule, nameOccName, getSrcLoc )
-import OccName         ( mkGenOcc1, mkGenOcc2 )
-import RdrName         ( RdrName, getRdrName, mkVarUnqual, mkOrig )
-import BasicTypes       ( EP(..), Boxity(..) )
-import Var              ( TyVar )
-import VarSet          ( varSetElems )
-import Id               ( Id, idType )
-import TysWiredIn      ( listTyCon )
+import Type
+import TcHsSyn
+import TcType
+import DataCon
+
+import TyCon
+import Name
+import OccName
+import RdrName
+import BasicTypes
+import Var
+import VarSet
+import Id
+import TysWiredIn
 import PrelNames
        
-import SrcLoc          ( srcLocSpan, noLoc, Located(..) )
-import Util             ( takeList, isSingleton )
+import SrcLoc
+import Util
 import Bag
 import Outputable 
 import FastString
@@ -387,12 +392,13 @@ splitInHalf list = (left, right)
 mkGenericLocal :: US -> RdrName
 mkGenericLocal u = mkVarUnqual (mkFastString ("g" ++ show u))
 
+mkGenericNames :: TyCon -> (RdrName, RdrName)
 mkGenericNames tycon
   = (from_RDR, to_RDR)
   where
     tc_name  = tyConName tycon
     tc_occ   = nameOccName tc_name
-    tc_mod   = nameModule tc_name
+    tc_mod   = ASSERT( isExternalName tc_name ) nameModule tc_name
     from_RDR = mkOrig tc_mod (mkGenOcc1 tc_occ)
     to_RDR   = mkOrig tc_mod (mkGenOcc2 tc_occ)
 \end{code}
@@ -527,6 +533,7 @@ bimapTyCon tycon arg_eps
 
 -------------------
 -- bimapArrow :: [EP a a', EP b b'] -> EP (a->b) (a'->b')
+bimapArrow :: [EP (LHsExpr RdrName)] -> EP (LHsExpr RdrName)
 bimapArrow [ep1, ep2]
   = EP { fromEP = mkHsLam [nlVarPat a_RDR, nlVarPat b_RDR] from_body, 
         toEP   = mkHsLam [nlVarPat a_RDR, nlVarPat b_RDR] to_body }
@@ -536,6 +543,7 @@ bimapArrow [ep1, ep2]
 
 -------------------
 -- bimapTuple :: [EP a1 b1, ... EP an bn] -> EP (a1,...an) (b1,..bn)
+bimapTuple :: [EP (LHsExpr RdrName)] -> EP (LHsExpr RdrName)
 bimapTuple eps 
   = EP { fromEP = mkHsLam [noLoc tuple_pat] (noLoc from_body),
         toEP   = mkHsLam [noLoc tuple_pat] (noLoc to_body) }
@@ -548,13 +556,17 @@ bimapTuple eps
 
 -------------------
 -- bimapList :: EP a b -> EP [a] [b]
+bimapList :: [EP (LHsExpr RdrName)] -> EP (LHsExpr RdrName)
 bimapList [ep]
   = EP { fromEP = nlHsApp (nlHsVar map_RDR) (fromEP ep),
         toEP   = nlHsApp (nlHsVar map_RDR) (toEP ep) }
 
 -------------------
-a_RDR  = mkVarUnqual FSLIT("a")
-b_RDR  = mkVarUnqual FSLIT("b")
+a_RDR, b_RDR :: RdrName
+a_RDR  = mkVarUnqual (fsLit "a")
+b_RDR  = mkVarUnqual (fsLit "b")
+
+gs_RDR :: [RdrName]
 gs_RDR = [ mkVarUnqual (mkFastString ("g"++show i)) | i <- [(1::Int) .. ] ]
 
 idEP :: EP (LHsExpr RdrName)