mod = rdrNameModule rdr_name
pick :: GlobalRdrElt -> Maybe GlobalRdrElt
- pick gre@(GRE {gre_prov = LocalDef m}) -- Local def
- | is_unqual || m == mod = Just gre
- | otherwise = Nothing
+ pick gre@(GRE {gre_prov = LocalDef, gre_name = n}) -- Local def
+ | is_unqual || nameModule n == mod = Just gre
+ | otherwise = Nothing
pick gre@(GRE {gre_prov = Imported [is]}) -- Single import (efficiency)
| is_unqual = if not (is_qual (is_decl is)) then Just gre
else Nothing
| otherwise = filter ((== mod) . is_as . is_decl) is
isLocalGRE :: GlobalRdrElt -> Bool
-isLocalGRE (GRE {gre_prov = LocalDef _}) = True
-isLocalGRE other = False
+isLocalGRE (GRE {gre_prov = LocalDef}) = True
+isLocalGRE other = False
unQualOK :: GlobalRdrElt -> Bool
-- An unqualifed version of this thing is in scope
-unQualOK (GRE {gre_prov = LocalDef _}) = True
+unQualOK (GRE {gre_prov = LocalDef}) = True
unQualOK (GRE {gre_prov = Imported is}) = not (all (is_qual . is_decl) is)
plusGlobalRdrEnv :: GlobalRdrEnv -> GlobalRdrEnv -> GlobalRdrEnv
\begin{code}
data Provenance
= LocalDef -- Defined locally
- Module
-
| Imported -- Imported
[ImportSpec] -- INVARIANT: non-empty
p1 == p2 = case p1 `compare` p2 of EQ -> True; _ -> False
instance Ord Provenance where
- compare (LocalDef _) (LocalDef _) = EQ
- compare (LocalDef _) (Imported _) = LT
- compare (Imported _ ) (LocalDef _) = GT
+ compare LocalDef LocalDef = EQ
+ compare LocalDef (Imported _) = LT
+ compare (Imported _ ) LocalDef = GT
compare (Imported is1) (Imported is2) = compare (head is1)
{- See Note [Comparing provenance] -} (head is2)
-- defined, and one might refer to it with a qualified name from
-- the import -- but I'm going to ignore that because it makes
-- the isLocalGRE predicate so much nicer this way
-plusProv (LocalDef m1) (LocalDef m2) = pprPanic "plusProv" (ppr m1 <+> ppr m2)
-plusProv p1@(LocalDef _) p2 = p1
-plusProv p1 p2@(LocalDef _) = p2
+plusProv LocalDef LocalDef = panic "plusProv"
+plusProv LocalDef p2 = LocalDef
+plusProv p1 LocalDef = LocalDef
plusProv (Imported is1) (Imported is2) = Imported (is1++is2)
pprNameProvenance :: GlobalRdrElt -> SDoc
-- Print out the place where the name was imported
-pprNameProvenance (GRE {gre_name = name, gre_prov = LocalDef _})
+pprNameProvenance (GRE {gre_name = name, gre_prov = LocalDef})
= ptext SLIT("defined at") <+> ppr (nameSrcLoc name)
pprNameProvenance (GRE {gre_name = name, gre_prov = Imported (why:whys)})
= sep [ppr why, nest 2 (ppr_defn (nameSrcLoc name))]