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|
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE TypeSynonymInstances #-}
{-# LANGUAGE FlexibleInstances #-}
-- This program must be called with GHC's libdir as the single command line
-- argument.
module Main where
-- import Data.Generics
import Data.Data hiding (Fixity)
import Data.List
import System.IO
import GHC
import BasicTypes
import DynFlags
import FastString
import ForeignCall
import MonadUtils
import Outputable
import HsDecls
import Bag (filterBag,isEmptyBag)
import System.Directory (removeFile)
import System.Environment( getArgs )
import qualified Data.Map as Map
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 tupArgs = gq (pm_parsed_source p)
putStrLn (intercalate "\n" $ map show tupArgs)
-- putStrLn (pp tupArgs)
-- putStrLn (intercalate "\n" [showAnns anns])
where
gq ast = everything (++) ([] `mkQ` doFixity
`extQ` doRuleDecl
`extQ` doHsExpr
`extQ` doInline
) ast
doFixity :: Fixity -> [(String,[String])]
doFixity (Fixity (SourceText ss) _ _) = [("f",[ss])]
doRuleDecl :: RuleDecl RdrName
-> [(String,[String])]
doRuleDecl (HsRule _ (ActiveBefore (SourceText ss) _) _ _ _ _ _)
= [("rb",[ss])]
doRuleDecl (HsRule _ (ActiveAfter (SourceText ss) _) _ _ _ _ _)
= [("ra",[ss])]
doRuleDecl (HsRule _ _ _ _ _ _ _) = []
doHsExpr :: HsExpr RdrName -> [(String,[String])]
doHsExpr (HsTickPragma src (_,_,_) ss _) = [("tp",[show ss])]
doHsExpr _ = []
doInline (InlinePragma _ _ _ (ActiveBefore (SourceText ss) _) _)
= [("ib",[ss])]
doInline (InlinePragma _ _ _ (ActiveAfter (SourceText ss) _) _)
= [("ia",[ss])]
doInline (InlinePragma _ _ _ _ _ ) = []
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
-- | Extend a generic query by a type-specific case
extQ :: ( Typeable a
, Typeable b
)
=> (a -> q)
-> (b -> q)
-> a
-> q
extQ f g a = maybe (f a) g (cast a)
-- | 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)
|
