add some DEBUG assertions

[ghc-hetmet.git] / compiler / basicTypes / DataCon.lhs

diff --git a/compiler/basicTypes/DataCon.lhs b/compiler/basicTypes/DataCon.lhs
index 0fb7fae..5211fc8 100644 (file)
--- a/compiler/basicTypes/DataCon.lhs
+++ b/compiler/basicTypes/DataCon.lhs
@@ -10,7 +10,7 @@ module DataCon (
        ConTag, fIRST_TAG,
        mkDataCon,
        dataConRepType, dataConSig, dataConFullSig,
-       dataConName, dataConTag, dataConTyCon, dataConUserType,
+       dataConName, dataConIdentity, dataConTag, dataConTyCon, dataConUserType,
        dataConUnivTyVars, dataConExTyVars, dataConAllTyVars, dataConResTys,
        dataConEqSpec, eqSpecPreds, dataConTheta, dataConStupidTheta, 
        dataConInstArgTys, dataConOrigArgTys, 
@@ -350,7 +350,7 @@ data DataConIds
        -- The 'Nothing' case of DCIds is important
        -- Not only is this efficient,
        -- but it also ensures that the wrapper is replaced
-       -- by the worker (becuase it *is* the wroker)
+       -- by the worker (becuase it *is* the worker)
        -- even when there are no args. E.g. in
        --              f (:) x
        -- the (:) *is* the worker.
@@ -501,6 +501,19 @@ mk_dict_strict_mark pred | isStrictPred pred = MarkedStrict
 dataConName :: DataCon -> Name
 dataConName = dcName
 
+-- generate a name in the format: package:Module.OccName
+-- and the unique identity of the name
+dataConIdentity :: DataCon -> String
+dataConIdentity dataCon
+   = prettyName
+   where
+   prettyName = pretty packageModule ++ "." ++ pretty occ
+   nm = getName dataCon
+   packageModule = nameModule nm
+   occ = getOccName dataCon
+   pretty :: Outputable a => a -> String 
+   pretty = showSDoc . ppr
+
 dataConTag :: DataCon -> ConTag
 dataConTag  = dcTag
 
@@ -631,10 +644,12 @@ dataConInstArgTys :: DataCon
                                -- NB: these INCLUDE the existentially quantified dict args
                                --     but EXCLUDE the data-decl context which is discarded
                                -- It's all post-flattening etc; this is a representation type
-dataConInstArgTys (MkData {dcRepArgTys = arg_tys, 
-                          dcUnivTyVars = univ_tvs, 
-                          dcExTyVars = ex_tvs}) inst_tys
- = ASSERT( length tyvars == length inst_tys )
+dataConInstArgTys dc@(MkData {dcRepArgTys = arg_tys, 
+                             dcUnivTyVars = univ_tvs, 
+                             dcExTyVars = ex_tvs}) inst_tys
+ = ASSERT2 ( length tyvars == length inst_tys 
+           , ptext SLIT("dataConInstArgTys") <+> ppr dc $$ ppr tyvars $$ ppr inst_tys)
+           
    map (substTyWith tyvars inst_tys) arg_tys
  where
    tyvars = univ_tvs ++ ex_tvs
@@ -643,9 +658,10 @@ dataConInstArgTys (MkData {dcRepArgTys = arg_tys,
 -- And the same deal for the original arg tys
 dataConInstOrigArgTys :: DataCon -> [Type] -> [Type]
 dataConInstOrigArgTys dc@(MkData {dcOrigArgTys = arg_tys,
-                              dcUnivTyVars = univ_tvs, 
-                              dcExTyVars = ex_tvs}) inst_tys
- = ASSERT2( length tyvars == length inst_tys, ptext SLIT("dataConInstOrigArgTys") <+> ppr dc <+> ppr inst_tys )
+                                 dcUnivTyVars = univ_tvs, 
+                                 dcExTyVars = ex_tvs}) inst_tys
+ = ASSERT2( length tyvars == length inst_tys
+          , ptext SLIT("dataConInstOrigArgTys") <+> ppr dc $$ ppr tyvars $$ ppr inst_tys )
    map (substTyWith tyvars inst_tys) arg_tys
  where
    tyvars = univ_tvs ++ ex_tvs