Moved all of the sub-functions of forAnyAST to the top-level

This commit is contained in:
Neil Brown 2008-11-13 16:43:01 +00:00
parent 6fc4ac9550
commit 265181d3c3

View File

@ -24,7 +24,7 @@ import Control.Monad.Error
import Control.Monad.Reader
import Control.Monad.State
import Data.Generics
import Data.Graph.Inductive
import Data.Graph.Inductive hiding (apply)
import Data.List
import qualified Data.Map as Map
import Data.Maybe
@ -97,7 +97,6 @@ data CheckOptData = CheckOptData
, flowGraph :: Maybe (FlowGraph CheckOptM UsageLabel)
}
--TODO make this a data item that fiddles with CheckOptData
data FlowGraphAnalysis res = FlowGraphAnalysis
{ getFlowGraphAnalysis :: CheckOptData -> Map.Map Node res
, addFlowGraphAnalysis :: Map.Map Node res -> CheckOptData -> CheckOptData
@ -178,10 +177,6 @@ liftCheckOptM = CheckOptM' . RestartT . lift . liftM Right
liftRestartT :: Monad m => m a -> RestartT outer t m a
liftRestartT m = RestartT $ lift (m >>* Right)
--elseError :: Bool -> String -> CheckOptM ()
--elseError b err = CheckOptM $ if b then lift $ dieP emptyMeta err else return ()
-- TODO use the nearest available meta-tag in the current data
forAnyParItems :: (ParItems a -> CheckOptM ()) -> CheckOptM ()
forAnyParItems = undefined
@ -197,9 +192,9 @@ forAnyAST origF = CheckOptM $ do
-- | Given a TypeSet, a function to apply to everything of type a, a route
-- location to begin at and an AST, transforms the tree. Handles any restarts
-- that are requested.
doTree :: TypeSet -> (a -> RestartT A.AST a CheckOptM ()) ->
doTree :: forall a. Data a => TypeSet -> (a -> RestartT A.AST a CheckOptM ()) ->
[Int] -> A.AST -> StateT CheckOptData PassM ()
doTree typeSet f route tr
doTree typeSet f route tr
= do x <- traverse typeSet f (Just route) tr
case x of
Left (route', cont) -> do -- Restart
@ -209,11 +204,12 @@ forAnyAST origF = CheckOptM $ do
-- | Given a TypeSet, a function to apply to everything of type a, a route
-- location to begin at and an AST, transforms the tree. If any restarts are
-- requested, that is indicated in the return value
traverse :: TypeSet -> (a -> RestartT A.AST a CheckOptM ()) -> Maybe [Int] -> A.AST ->
-- requested, that is indicated in the return value. If an AST is returned,
-- it is ignored (all changes are done in the state)
traverse :: forall a. Data a => TypeSet -> (a -> RestartT A.AST a CheckOptM ()) -> Maybe [Int] -> A.AST ->
StateT CheckOptData PassM
(Either (Maybe (Route a A.AST), a -> RestartT A.AST a CheckOptM A.AST) A.AST)
traverse typeSet f route tr
(Either (Maybe (Route a A.AST), a -> RestartT A.AST a CheckOptM ()) ())
traverse typeSet f route tr
= deCheckOptM $ flip runReaderT undefined
-- We use undefined because we don't have a real default value, and the user-supplied
-- function will only be called from inside a "local". Perhaps with
@ -230,8 +226,11 @@ forAnyAST origF = CheckOptM $ do
-- we tack on a state parameter with a (Maybe Route) and keep scanning
-- until we find the place to resume from (or go one past it, which is
-- nice in case the location is no longer valid)
gen :: A.AST -> StateT (Maybe [Int]) (RestartT A.AST a CheckOptM) A.AST
-- Given a complete AST, either applies f (from parent) using apply (see
-- below) if we are past the point we are meant to start at, or otherwise
-- just skips this node
gen :: A.AST -> StateT (Maybe [Int]) (RestartT A.AST a CheckOptM) ()
gen x = gmapMForRoute typeSet (baseTransformRoute `extTransformRoute` (\(y, route) ->
do st <- get
case st of
@ -241,13 +240,13 @@ forAnyAST origF = CheckOptM $ do
then return y {- Not reached start point yet -} else do
put Nothing -- Blank the start point now we've found it
lift $ apply typeSet f (y, route)
)) x
)) x >> return ()
-- The return of this function is ignored. All changes should be done in the
-- state.
apply :: TypeSet -> (a -> RestartT A.AST a CheckOptM ()) ->
apply :: forall a. Data a => TypeSet -> (a -> RestartT A.AST a CheckOptM ()) ->
(a, Route a A.AST) -> RestartT A.AST a CheckOptM a
apply typeSet f (x, route)
apply typeSet f (x, route)
= (RestartT $ (local (const route) $ getRestartT (f x)))
>> (liftRestartT (CheckOptM get) >>* ast >>* routeGet route)
>>= gmapMForRoute typeSet (extTransformRoute baseTransformRoute $