Comments only

[ghc-hetmet.git] / compiler / typecheck / TcRnTypes.lhs

diff --git a/compiler/typecheck/TcRnTypes.lhs b/compiler/typecheck/TcRnTypes.lhs
index c011d20..746a30b 100644 (file)
--- a/compiler/typecheck/TcRnTypes.lhs
+++ b/compiler/typecheck/TcRnTypes.lhs
@@ -233,7 +233,11 @@ data TcGblEnv
         tcg_rn_imports :: [LImportDecl Name],
                -- Keep the renamed imports regardless.  They are not 
                -- voluminous and are needed if you want to report unused imports
+
         tcg_used_rdrnames :: TcRef (Set RdrName),
+               -- The set of used *imported* (not locally-defined) RdrNames
+               -- Used only to report unused import declarations
+
        tcg_rn_decls :: Maybe (HsGroup Name),
           -- ^ Renamed decls, maybe.  @Nothing@ <=> Don't retain renamed
           -- decls.
@@ -247,8 +251,12 @@ data TcGblEnv
        tcg_fords     :: [LForeignDecl Id], -- ...Foreign import & exports
 
        tcg_doc_hdr   :: Maybe LHsDocString, -- ^ Maybe Haddock header docs
-        tcg_hpc :: AnyHpcUsage -- ^ @True@ if any part of the prog uses hpc
-                               -- instrumentation.
+        tcg_hpc       :: AnyHpcUsage,        -- ^ @True@ if any part of the
+                                             --  prog uses hpc instrumentation.
+
+        tcg_main      :: Maybe Name          -- ^ The Name of the main
+                                             -- function, if this module is
+                                             -- the main module.
     }
 
 data RecFieldEnv