- = getModeRn `thenRn` \ mode ->
- case mode of {
- -- When processing interface files, the global env
- -- is always empty, so go straight to the name cache
- InterfaceMode -> lookupOrigName rdr_name ;
-
- SourceMode ->
-
- getGlobalNameEnv `thenRn` \ global_env ->
- case lookupRdrEnv global_env rdr_name of
- Just [(name,_)] -> returnRn name
- Just stuff@(_:_) -> addNameClashErrRn rdr_name stuff `thenRn_`
- returnRn rdr_name
- Nothing -> -- Not found when processing source code; so fail
- failWithRn (mkUnboundName rdr_name)
- (unknownNameErr rdr_name)
- }
+ = getModeRn `thenRn` \ mode ->
+ case mode of
+ SourceMode -> getGlobalNameEnv `thenRn` \ global_env ->
+ lookupSrcName global_env rdr_name
+
+ InterfaceMode -> lookupIfaceName rdr_name
+
+lookupSrcName :: GlobalRdrEnv -> RdrName -> RnM d Name
+-- NB: passed GlobalEnv explicitly, not necessarily in RnMS monad
+lookupSrcName global_env rdr_name
+ | isOrig rdr_name -- Can occur in source code too
+ = lookupOrigName rdr_name
+
+ | otherwise
+ = case lookupRdrEnv global_env rdr_name of
+ Just [(name,_)] -> returnRn name
+ Just stuff@((name,_):_) -> addNameClashErrRn rdr_name stuff `thenRn_`
+ returnRn name
+ Nothing -> failWithRn (mkUnboundName rdr_name)
+ (unknownNameErr rdr_name)
+
+lookupOrigName :: RdrName -> RnM d Name
+lookupOrigName rdr_name
+ = ASSERT( isOrig rdr_name )
+ newGlobalName (rdrNameModule rdr_name) (rdrNameOcc rdr_name)
+
+lookupIfaceUnqual :: RdrName -> RnM d Name
+lookupIfaceUnqual rdr_name
+ = ASSERT( isUnqual rdr_name )
+ -- An Unqual is allowed; interface files contain
+ -- unqualified names for locally-defined things, such as
+ -- constructors of a data type.
+ getModuleRn `thenRn ` \ mod ->
+ newGlobalName (moduleName mod) (rdrNameOcc rdr_name)
+
+lookupIfaceName :: RdrName -> RnM d Name
+lookupIfaceName rdr_name
+ | isUnqual rdr_name = lookupIfaceUnqual rdr_name
+ | otherwise = lookupOrigName rdr_name