[project @ 2001-03-08 12:07:38 by simonpj]

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

diff --git a/ghc/compiler/main/HscTypes.lhs b/ghc/compiler/main/HscTypes.lhs
index ec70d32..c358e8e 100644 (file)
--- a/ghc/compiler/main/HscTypes.lhs
+++ b/ghc/compiler/main/HscTypes.lhs
@@ -52,7 +52,7 @@ module HscTypes (
 
 import RdrName         ( RdrNameEnv, addListToRdrEnv, emptyRdrEnv, mkRdrUnqual, rdrEnvToList )
 import Name            ( Name, NamedThing, getName, nameOccName, nameModule, nameSrcLoc )
-import Name -- Env
+import NameEnv
 import OccName         ( OccName )
 import Module          ( Module, ModuleName, ModuleEnv,
                          lookupModuleEnv, lookupModuleEnvByName, emptyModuleEnv
@@ -169,6 +169,25 @@ data ModDetails
         md_insts    :: [DFunId],       -- Dfun-ids for the instances in this module
         md_rules    :: [IdCoreRule]    -- Domain may include Ids from other modules
      }
+
+--     NOT YET IMPLEMENTED
+-- The ModDetails takes on several slightly different forms:
+--
+-- After typecheck + desugar
+--     md_types        contains TyCons, Classes, and hasNoBinding Ids
+--     md_insts        all instances from this module (incl derived ones)
+--     md_rules        all rules from this module
+--     md_binds        desugared bindings
+--
+-- After simplification
+--     md_types        same as after typecheck
+--     md_insts        ditto
+--     md_rules        orphan rules only (local ones attached to binds)
+--     md_binds        with rules attached
+--
+-- After tidy 
+--     md_types        now contains Ids as well, replete with correct IdInfo
+--                     apart from
 \end{code}
 
 \begin{code}