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-rw-r--r--src/Main.hs79
1 files changed, 49 insertions, 30 deletions
diff --git a/src/Main.hs b/src/Main.hs
index c600f0b3..f6dc5b4e 100644
--- a/src/Main.hs
+++ b/src/Main.hs
@@ -40,7 +40,7 @@ import Control.Monad.Writer
import Data.FiniteMap
import System.Console.GetOpt
import Data.IORef
-import Debug.Trace
+--import Debug.Trace
import System.IO.Unsafe ( unsafePerformIO )
#endif
@@ -322,10 +322,14 @@ mkInterface no_implicit_prelude mod_map filename
where
loc = SrcLoc 0 0
is_prel_import (HsImportDecl _ mdl0 _ _ _ ) = mdl0 == prelude_mod
+ -- in
-- build the orig_env, which maps names to *original* names (so we can
-- find the original declarations & docs for things).
- orig_env = buildOrigEnv mod_map implicit_imps `plusFM` local_orig_env
+ imported_orig_env <- buildOrigEnv mdl mod_map implicit_imps
+
+ let
+ orig_env = imported_orig_env `plusFM` local_orig_env
-- convert names in source code to original, fully qualified, names
(orig_exports, missing_names1)
@@ -335,10 +339,11 @@ mkInterface no_implicit_prelude mod_map filename
= runRnFM orig_env (mapM renameDecl annotated_decls)
-- gather up a list of entities that are exported (original names)
- (exported_names, exported_visible_names)
- = exportedNames mdl mod_map
+ (exported_names, exported_visible_names)
+ <- exportedNames mdl mod_map
locally_defined_names orig_env sub_map
orig_exports opts
+ let
-- build the import env, which maps original names to import names
local_import_env = listToFM (zip qual_local_names qual_local_names)
@@ -557,8 +562,7 @@ mkExportItems mod_map this_mod orig_env decl_map sub_map decls
| OptHide `elem` iface_options iface
-> return (iface_orig_exports iface)
| otherwise -> return [ ExportModule m ]
- Nothing -> do tell ["Warning: module not found: " ++ show m]
- return []
+ Nothing -> return [] -- already emitted a warning in exportedNames
findDecl :: HsQName -> Maybe HsDecl
findDecl (UnQual _)
@@ -663,14 +667,17 @@ exportedNames :: Module -> ModuleMap -> [HsName]
-> FiniteMap HsName [HsName]
-> Maybe [HsExportSpec]
-> [DocOption]
- -> ([HsQName], [HsQName])
+ -> ErrMsgM ([HsQName], [HsQName])
exportedNames mdl mod_map local_names orig_env sub_map maybe_exps opts
- | Nothing <- maybe_exps = all_local_names_pr
- | OptIgnoreExports `elem` opts = all_local_names_pr
- | Just expspecs <- maybe_exps =
- (concat (map extract expspecs),
- concat (map extract_vis expspecs))
+ | Nothing <- maybe_exps
+ = return all_local_names_pr
+ | OptIgnoreExports `elem` opts
+ = return all_local_names_pr
+ | Just expspecs <- maybe_exps
+ = do all_names <- mapM extract expspecs
+ all_vis_names <- mapM extract_vis expspecs
+ return (concat all_names, concat all_vis_names)
where
all_local_names = map (Qual mdl) local_names
all_local_names_pr = (all_local_names,all_local_names)
@@ -679,22 +686,25 @@ exportedNames mdl mod_map local_names orig_env sub_map maybe_exps opts
extract e =
case e of
- HsEVar x -> [x]
- HsEAbs t -> [t]
+ HsEVar x -> return [x]
+ HsEAbs t -> return [t]
HsEThingAll t@(Qual m x) ->
- t : filter (`elem` in_scope) (map (Qual m) all_subs)
+ return (t : filter (`elem` in_scope) (map (Qual m) all_subs))
where
all_subs | m == mdl = lookupWithDefaultFM sub_map [] x
| otherwise = all_subs_of_qname mod_map t
- HsEThingWith t cs -> t : cs
+ HsEThingWith t cs -> return (t : cs)
HsEModuleContents m
- | m == mdl -> map (Qual mdl) local_names
+ | m == mdl -> return (map (Qual mdl) local_names)
| otherwise ->
case lookupFM mod_map m of
- Just iface -> filter (`elem` in_scope) (eltsFM (iface_env iface))
- Nothing -> trace ("Warning: module not found: " ++ show m) $ []
- _ -> []
+ Just iface ->
+ return (filter (`elem` in_scope) (eltsFM (iface_env iface)))
+ Nothing ->
+ do tell (exportModuleMissingErr mdl m)
+ return []
+ _ -> return []
-- Just the names that will be visible in the documentation
-- (ie. omit names exported via a 'module M' export, if we are just
@@ -702,17 +712,21 @@ exportedNames mdl mod_map local_names orig_env sub_map maybe_exps opts
extract_vis e =
case e of
HsEModuleContents m
- | m == mdl -> map (Qual mdl) local_names
+ | m == mdl -> return (map (Qual mdl) local_names)
| otherwise ->
case lookupFM mod_map m of
Just iface
| OptHide `elem` iface_options iface ->
- filter (`elem` in_scope) (eltsFM (iface_env iface))
- | otherwise -> []
+ return (filter (`elem` in_scope) (eltsFM (iface_env iface)))
+ | otherwise -> return []
Nothing
- -> trace ("Warning: module not found: " ++ show m) $ []
+ -> return [] -- we already emitted a warning above
_ -> extract e
+exportModuleMissingErr this mdl
+ = ["Warning: in export list of " ++ show this
+ ++ ": module not found: " ++ show mdl]
+
-- for a given entity, find all the names it "owns" (ie. all the
-- constructors and field names of a tycon, or all the methods of a
-- class).
@@ -753,16 +767,21 @@ getReExports mdl mod_map (Just exps)
-- The orig env maps names in the current source file to
-- fully-qualified "original" names.
-buildOrigEnv :: ModuleMap -> [HsImportDecl] -> FiniteMap HsQName HsQName
-buildOrigEnv mod_map imp_decls
- = foldr plusFM emptyFM (map build imp_decls)
+buildOrigEnv :: Module -> ModuleMap -> [HsImportDecl]
+ -> ErrMsgM (FiniteMap HsQName HsQName)
+buildOrigEnv this_mdl mod_map imp_decls
+ = do maps <- mapM build imp_decls
+ return (foldr plusFM emptyFM maps)
where
build imp_decl@(HsImportDecl _ mdl qual maybe_as _)
= case lookupFM mod_map mdl of
- Nothing ->
- trace ("Warning: module not found: " ++ show mdl) $ emptyFM
+ Nothing -> do
+ tell ["Warning: " ++ show this_mdl
+ ++ ": imported module not found: " ++ show mdl]
+ return emptyFM
Just iface ->
- listToFM (concat (map orig_map (processImportDecl mod_map imp_decl)))
+ return (listToFM (concat (map orig_map
+ (processImportDecl mod_map imp_decl))))
where
-- bring both qualified and unqualified names into scope, unless