Massive patch for the first months work adding System FC to GHC #24

[ghc-hetmet.git] / compiler / main / HscTypes.lhs

diff --git a/compiler/main/HscTypes.lhs b/compiler/main/HscTypes.lhs
index a200bf9..26d6fab 100644 (file)
--- a/compiler/main/HscTypes.lhs
+++ b/compiler/main/HscTypes.lhs
@@ -83,7 +83,7 @@ import Id             ( Id )
 import Type            ( TyThing(..) )
 
 import Class           ( Class, classSelIds, classTyCon )
-import TyCon           ( TyCon, tyConSelIds, tyConDataCons )
+import TyCon           ( TyCon, tyConSelIds, tyConDataCons, isNewTyCon, newTyConCo )
 import DataCon         ( dataConImplicitIds )
 import PrelNames       ( gHC_PRIM )
 import Packages                ( PackageId )
@@ -323,8 +323,8 @@ data FindResult
   | ModuleHidden  PackageId
        -- for an explicit source import: the package containing the module is
        -- exposed, but the module itself is hidden.
-  | NotFound [FilePath]
-       -- the module was not found, the specified places were searched.
+  | NotFound [FilePath] (Maybe PackageId)
+       -- the module was not found, the specified places were searched
   | NotFoundInPackage PackageId
        -- the module was not found in this package
 
@@ -618,13 +618,16 @@ mkPrintUnqualified env = (qual_name, qual_mod)
 
 \begin{code}
 implicitTyThings :: TyThing -> [TyThing]
+-- If you change this, make sure you change LoadIface.ifaceDeclSubBndrs in sync
+
 implicitTyThings (AnId id)   = []
 
        -- For type constructors, add the data cons (and their extras),
        -- and the selectors and generic-programming Ids too
        --
        -- Newtypes don't have a worker Id, so don't generate that?
-implicitTyThings (ATyCon tc) = map AnId (tyConSelIds tc) ++ 
+implicitTyThings (ATyCon tc) = implicitNewCoTyCon tc ++
+                              map AnId (tyConSelIds tc) ++ 
                               concatMap (extras_plus . ADataCon) (tyConDataCons tc)
                     
        -- For classes, add the class TyCon too (and its extras)
@@ -636,6 +639,10 @@ implicitTyThings (AClass cl) = map AnId (classSelIds cl) ++
        -- For data cons add the worker and wrapper (if any)
 implicitTyThings (ADataCon dc) = map AnId (dataConImplicitIds dc)
 
+       -- For newtypes, add the implicit coercion tycon
+implicitNewCoTyCon tc | isNewTyCon tc = [ATyCon (newTyConCo tc)]
+                     | otherwise     = []
+
 extras_plus thing = thing : implicitTyThings thing
 
 extendTypeEnvWithIds :: TypeEnv -> [Id] -> TypeEnv
@@ -1064,7 +1071,7 @@ showModMsg target recomp mod_summary
                       _other     -> text (msObjFilePath mod_summary),
                    char ')'])
  where 
-    mod     = ms_mod mod_summary 
+    mod     = moduleName (ms_mod mod_summary)
     mod_str = showSDoc (ppr mod) ++ hscSourceString (ms_hsc_src mod_summary)
 \end{code}