mirror of
https://github.com/github/semantic.git
synced 2024-12-30 02:14:20 +03:00
Remove Heaps from the flow-insensitive cache.
This commit is contained in:
Rob Rix
parent
87c609fa1c
commit
dec0f3f845
@ -1,4 +1,4 @@
|
||||
{-# LANGUAGE ConstraintKinds, GADTs, GeneralizedNewtypeDeriving, TypeOperators #-}
|
||||
{-# LANGUAGE GADTs, GeneralizedNewtypeDeriving, TypeOperators #-}
|
||||
module Analysis.Abstract.Caching.FlowInsensitive
|
||||
( cachingTerms
|
||||
, convergingModules
|
||||
@ -14,57 +14,57 @@ import Data.Map.Monoidal as Monoidal
|
||||
import Prologue
|
||||
|
||||
-- | Look up the set of values for a given configuration in the in-cache.
|
||||
consultOracle :: (Cacheable term address value, Member (Reader (Cache term address value)) effects)
|
||||
=> Configuration term address value
|
||||
-> TermEvaluator term address value effects (Set (Cached address value))
|
||||
consultOracle :: (Member (Reader (Cache term address)) effects, Ord address, Ord term)
|
||||
=> Configuration term address
|
||||
-> TermEvaluator term address value effects (Set (ValueRef address))
|
||||
consultOracle configuration = fromMaybe mempty . cacheLookup configuration <$> ask
|
||||
|
||||
-- | Run an action with the given in-cache.
|
||||
withOracle :: Member (Reader (Cache term address value)) effects
|
||||
=> Cache term address value
|
||||
withOracle :: Member (Reader (Cache term address)) effects
|
||||
=> Cache term address
|
||||
-> TermEvaluator term address value effects a
|
||||
-> TermEvaluator term address value effects a
|
||||
withOracle cache = local (const cache)
|
||||
|
||||
|
||||
-- | Look up the set of values for a given configuration in the out-cache.
|
||||
lookupCache :: (Cacheable term address value, Member (State (Cache term address value)) effects)
|
||||
=> Configuration term address value
|
||||
-> TermEvaluator term address value effects (Maybe (Set (Cached address value)))
|
||||
lookupCache :: (Member (State (Cache term address)) effects, Ord address, Ord term)
|
||||
=> Configuration term address
|
||||
-> TermEvaluator term address value effects (Maybe (Set (ValueRef address)))
|
||||
lookupCache configuration = cacheLookup configuration <$> get
|
||||
|
||||
-- | Run an action, caching its result and 'Heap' under the given configuration.
|
||||
cachingConfiguration :: (Cacheable term address value, Member (State (Cache term address value)) effects, Member (State (Heap address value)) effects)
|
||||
=> Configuration term address value
|
||||
-> Set (Cached address value)
|
||||
cachingConfiguration :: (Member (State (Cache term address)) effects, Ord address, Ord term)
|
||||
=> Configuration term address
|
||||
-> Set (ValueRef address)
|
||||
-> TermEvaluator term address value effects (ValueRef address)
|
||||
-> TermEvaluator term address value effects (ValueRef address)
|
||||
cachingConfiguration configuration values action = do
|
||||
modify' (cacheSet configuration values)
|
||||
result <- Cached <$> action <*> TermEvaluator getHeap
|
||||
cachedValue result <$ modify' (cacheInsert configuration result)
|
||||
result <- action
|
||||
result <$ modify' (cacheInsert configuration result)
|
||||
|
||||
putCache :: Member (State (Cache term address value)) effects
|
||||
=> Cache term address value
|
||||
putCache :: Member (State (Cache term address)) effects
|
||||
=> Cache term address
|
||||
-> TermEvaluator term address value effects ()
|
||||
putCache = put
|
||||
|
||||
-- | Run an action starting from an empty out-cache, and return the out-cache afterwards.
|
||||
isolateCache :: Member (State (Cache term address value)) effects
|
||||
isolateCache :: Member (State (Cache term address)) effects
|
||||
=> TermEvaluator term address value effects a
|
||||
-> TermEvaluator term address value effects (Cache term address value)
|
||||
-> TermEvaluator term address value effects (Cache term address)
|
||||
isolateCache action = putCache lowerBound *> action *> get
|
||||
|
||||
|
||||
-- | Analyze a term using the in-cache as an oracle & storing the results of the analysis in the out-cache.
|
||||
cachingTerms :: ( Cacheable term address value
|
||||
, Corecursive term
|
||||
, Member NonDet effects
|
||||
, Member (Reader (Cache term address value)) effects
|
||||
, Member (Reader (Live address)) effects
|
||||
, Member (State (Cache term address value)) effects
|
||||
cachingTerms :: ( Corecursive term
|
||||
, Member (Env address) effects
|
||||
, Member (State (Heap address value)) effects
|
||||
, Member NonDet effects
|
||||
, Member (Reader (Cache term address)) effects
|
||||
, Member (Reader (Live address)) effects
|
||||
, Member (State (Cache term address)) effects
|
||||
, Ord address
|
||||
, Ord term
|
||||
)
|
||||
=> SubtermAlgebra (Base term) term (TermEvaluator term address value effects (ValueRef address))
|
||||
-> SubtermAlgebra (Base term) term (TermEvaluator term address value effects (ValueRef address))
|
||||
@ -72,24 +72,24 @@ cachingTerms recur term = do
|
||||
c <- getConfiguration (embedSubterm term)
|
||||
cached <- lookupCache c
|
||||
case cached of
|
||||
Just pairs -> scatter pairs
|
||||
Just values -> scatter values
|
||||
Nothing -> do
|
||||
pairs <- consultOracle c
|
||||
cachingConfiguration c pairs (recur term)
|
||||
values <- consultOracle c
|
||||
cachingConfiguration c values (recur term)
|
||||
|
||||
convergingModules :: ( AbstractValue address value effects
|
||||
, Cacheable term address value
|
||||
, Effects effects
|
||||
, Member (Env address) effects
|
||||
, Member Fresh effects
|
||||
, Member NonDet effects
|
||||
, Member (Reader (Cache term address value)) effects
|
||||
, Member (Reader (Cache term address)) effects
|
||||
, Member (Reader (Live address)) effects
|
||||
, Member (Reader ModuleInfo) effects
|
||||
, Member (Reader Span) effects
|
||||
, Member (Resumable (BaseError (EnvironmentError address))) effects
|
||||
, Member (State (Cache term address value)) effects
|
||||
, Member (Env address) effects
|
||||
, Member (State (Heap address value)) effects
|
||||
, Effects effects
|
||||
, Member (State (Cache term address)) effects
|
||||
, Ord address
|
||||
, Ord term
|
||||
)
|
||||
=> SubtermAlgebra Module term (TermEvaluator term address value effects address)
|
||||
-> SubtermAlgebra Module term (TermEvaluator term address value effects address)
|
||||
@ -97,7 +97,6 @@ convergingModules recur m = do
|
||||
c <- getConfiguration (subterm (moduleBody m))
|
||||
-- Convergence here is predicated upon an Eq instance, not α-equivalence
|
||||
cache <- converge lowerBound (\ prevCache -> isolateCache $ do
|
||||
TermEvaluator (putHeap (configurationHeap c))
|
||||
TermEvaluator (putEvalContext (configurationContext c))
|
||||
-- We need to reset fresh generation so that this invocation converges.
|
||||
resetFresh 0 $
|
||||
@ -125,17 +124,17 @@ converge seed f = loop seed
|
||||
loop x'
|
||||
|
||||
-- | Nondeterministically write each of a collection of stores & return their associated results.
|
||||
scatter :: (Foldable t, Member NonDet effects, Member (State (Heap address value)) effects) => t (Cached address value) -> TermEvaluator term address value effects (ValueRef address)
|
||||
scatter = foldMapA (\ (Cached value heap') -> TermEvaluator (putHeap heap') $> value)
|
||||
scatter :: (Foldable t, Member NonDet effects) => t (ValueRef address) -> TermEvaluator term address value effects (ValueRef address)
|
||||
scatter = foldMapA pure
|
||||
|
||||
-- | Get the current 'Configuration' with a passed-in term.
|
||||
getConfiguration :: (Member (Reader (Live address)) effects, Member (Env address) effects, Member (State (Heap address value)) effects)
|
||||
getConfiguration :: (Member (Reader (Live address)) effects, Member (Env address) effects)
|
||||
=> term
|
||||
-> TermEvaluator term address value effects (Configuration term address value)
|
||||
getConfiguration term = Configuration term <$> TermEvaluator askRoots <*> TermEvaluator getEvalContext <*> TermEvaluator getHeap
|
||||
-> TermEvaluator term address value effects (Configuration term address)
|
||||
getConfiguration term = Configuration term <$> TermEvaluator askRoots <*> TermEvaluator getEvalContext
|
||||
|
||||
|
||||
caching :: Effects effects => TermEvaluator term address value (NonDet ': Reader (Cache term address value) ': State (Cache term address value) ': effects) a -> TermEvaluator term address value effects (Cache term address value, [a])
|
||||
caching :: Effects effects => TermEvaluator term address value (NonDet ': Reader (Cache term address) ': State (Cache term address) ': effects) a -> TermEvaluator term address value effects (Cache term address, [a])
|
||||
caching
|
||||
= runState lowerBound
|
||||
. runReader lowerBound
|
||||
@ -143,38 +142,29 @@ caching
|
||||
|
||||
|
||||
-- | A map of 'Configuration's to 'Set's of resulting values & 'Heap's.
|
||||
newtype Cache term address value = Cache { unCache :: Monoidal.Map (Configuration term address value) (Set (Cached address value)) }
|
||||
deriving (Eq, Lower, Monoid, Ord, Reducer (Configuration term address value, Cached address value), Semigroup)
|
||||
newtype Cache term address = Cache { unCache :: Monoidal.Map (Configuration term address) (Set (ValueRef address)) }
|
||||
deriving (Eq, Lower, Monoid, Ord, Reducer (Configuration term address, ValueRef address), Semigroup)
|
||||
|
||||
-- | A single point in a program’s execution.
|
||||
data Configuration term address value = Configuration
|
||||
data Configuration term address = Configuration
|
||||
{ configurationTerm :: term -- ^ The “instruction,” i.e. the current term to evaluate.
|
||||
, configurationRoots :: Live address -- ^ The set of rooted addresses.
|
||||
, configurationContext :: EvalContext address -- ^ The evaluation context in 'configurationTerm'.
|
||||
, configurationHeap :: Heap address value -- ^ The heap of values.
|
||||
}
|
||||
deriving (Eq, Ord, Show)
|
||||
|
||||
data Cached address value = Cached
|
||||
{ cachedValue :: ValueRef address
|
||||
, cachedHeap :: Heap address value
|
||||
}
|
||||
deriving (Eq, Ord, Show)
|
||||
|
||||
|
||||
type Cacheable term address value = (Ord address, Ord term, Ord value)
|
||||
|
||||
-- | Look up the resulting value & 'Heap' for a given 'Configuration'.
|
||||
cacheLookup :: Cacheable term address value => Configuration term address value -> Cache term address value -> Maybe (Set (Cached address value))
|
||||
cacheLookup :: (Ord address, Ord term) => Configuration term address -> Cache term address -> Maybe (Set (ValueRef address))
|
||||
cacheLookup key = Monoidal.lookup key . unCache
|
||||
|
||||
-- | Set the resulting value & 'Heap' for a given 'Configuration', overwriting any previous entry.
|
||||
cacheSet :: Cacheable term address value => Configuration term address value -> Set (Cached address value) -> Cache term address value -> Cache term address value
|
||||
cacheSet :: (Ord address, Ord term) => Configuration term address -> Set (ValueRef address) -> Cache term address -> Cache term address
|
||||
cacheSet key value = Cache . Monoidal.insert key value . unCache
|
||||
|
||||
-- | Insert the resulting value & 'Heap' for a given 'Configuration', appending onto any previous entry.
|
||||
cacheInsert :: Cacheable term address value => Configuration term address value -> Cached address value -> Cache term address value -> Cache term address value
|
||||
cacheInsert :: (Ord address, Ord term) => Configuration term address -> ValueRef address -> Cache term address -> Cache term address
|
||||
cacheInsert = curry cons
|
||||
|
||||
instance (Show term, Show address, Show value) => Show (Cache term address value) where
|
||||
instance (Show term, Show address) => Show (Cache term address) where
|
||||
showsPrec d = showsUnaryWith showsPrec "Cache" d . map (second toList) . Monoidal.pairs . unCache
|
||||
|
||||
Loading…
Reference in New Issue
Block a user