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|
{-# LANGUAGE RankNTypes #-}
-- This program must be called with GHC's libdir and the file to be checked as
-- the command line arguments.
module CheckUtils where
import Data.Data
import Data.List
import System.IO
import GHC
import GHC.Types.Basic
import GHC.Driver.Session
import MonadUtils
import Outputable
import ApiAnnotation
import Bag (filterBag,isEmptyBag)
import System.Directory (removeFile)
import System.Environment( getArgs )
import qualified Data.Map as Map
import qualified Data.Set as Set
import Data.Dynamic ( fromDynamic,Dynamic )
_main::IO()
_main = do
[libdir,fileName] <- getArgs
testOneFile libdir fileName
testOneFile libdir fileName = do
((anns,cs),p) <- runGhc (Just libdir) $ do
dflags <- getSessionDynFlags
setSessionDynFlags dflags
let mn =mkModuleName fileName
addTarget Target { targetId = TargetModule mn
, targetAllowObjCode = True
, targetContents = Nothing }
load LoadAllTargets
modSum <- getModSummary mn
p <- parseModule modSum
return (pm_annotations p,p)
let spans = Set.fromList $ getAllSrcSpans (pm_parsed_source p)
problems = filter (\(s,a) -> not (Set.member s spans))
$ getAnnSrcSpans (anns,cs)
exploded = [((kw,ss),[anchor])
| ((anchor,kw),sss) <- Map.toList anns,ss <- sss]
exploded' = Map.toList $ Map.fromListWith (++) exploded
problems' = filter (\(_,anchors)
-> not (any (\a -> Set.member a spans) anchors))
exploded'
putStrLn "---Problems---------------------"
putStrLn (intercalate "\n" [showAnns $ Map.fromList $ map snd problems])
putStrLn "---Problems'--------------------"
putStrLn (intercalate "\n" [pp $ Map.fromList $ map fst problems'])
putStrLn "--------------------------------"
putStrLn (intercalate "\n" [showAnns anns])
where
getAnnSrcSpans :: ApiAnns -> [(SrcSpan,(ApiAnnKey,[SrcSpan]))]
getAnnSrcSpans (anns,_) = map (\a@((ss,_),_) -> (ss,a)) $ Map.toList anns
getAllSrcSpans :: (Data t) => t -> [SrcSpan]
getAllSrcSpans ast = everything (++) ([] `mkQ` getSrcSpan) ast
where
getSrcSpan :: SrcSpan -> [SrcSpan]
getSrcSpan ss = [ss]
showAnns anns = "[\n" ++ (intercalate "\n"
$ map (\((s,k),v)
-> ("(AK " ++ pp s ++ " " ++ show k ++" = " ++ pp v ++ ")\n"))
$ Map.toList anns)
++ "]\n"
pp a = showPpr unsafeGlobalDynFlags a
-- ---------------------------------------------------------------------
-- Copied from syb for the test
-- | Generic queries of type \"r\",
-- i.e., take any \"a\" and return an \"r\"
--
type GenericQ r = forall a. Data a => a -> r
-- | Make a generic query;
-- start from a type-specific case;
-- return a constant otherwise
--
mkQ :: ( Typeable a
, Typeable b
)
=> r
-> (b -> r)
-> a
-> r
(r `mkQ` br) a = case cast a of
Just b -> br b
Nothing -> r
-- | Summarise all nodes in top-down, left-to-right order
everything :: (r -> r -> r) -> GenericQ r -> GenericQ r
-- Apply f to x to summarise top-level node;
-- use gmapQ to recurse into immediate subterms;
-- use ordinary foldl to reduce list of intermediate results
everything k f x = foldl k (f x) (gmapQ (everything k f) x)
|
