Supercompiled rule tries.

examples/CountUpgradeable.hs

@@ -6,7 +6,7 @@ import "foldl" Control.Foldl (Fold(..))
 import qualified "foldl" Control.Foldl as Foldl
 import "base" Control.Monad (forever)
 import "base" Data.Bool (bool)
-import "https-everywhere-rules" Data.HTTPSEverywhere.Rules (rewriteURL, RuleSet, getRulesets)
+import "https-everywhere-rules" Data.HTTPSEverywhere.Rules (rewriteURL)
 import "base" Data.Maybe (isJust)
 import "base" Data.Monoid (Sum(..))
 import "network-uri" Network.URI (URI, parseURI)
@@ -17,8 +17,8 @@ import qualified "pipes" Pipes.Prelude as Pipes (fold)
 parse :: Monad m => Pipe String URI m ()
 parse = forever $ parseURI <$> await >>= maybe (return ()) yield
 
-check :: [RuleSet] -> Pipe URI Bool IO ()
+check :: Pipe URI Bool IO ()
-check rs = forever $ await >>= yield . isJust . rewriteURL rs
+check = forever $ await >>= yield . isJust . rewriteURL
 
 fold :: Monad m => Fold a b -> Producer a m () -> m b
 fold (Fold step begin done) = Pipes.fold step begin done
@@ -27,6 +27,4 @@ proportion :: Fold Bool (Int, Int)
 proportion = (,) <$> Foldl.foldMap (Sum . bool 0 1) getSum <*> Foldl.length
 
 main :: IO ()
-main = do
+main = fold proportion (stdinLn >-> parse >-> check) >>= print
-  rulesets <- getRulesets
-  fold proportion (stdinLn >-> parse >-> check rulesets) >>= print

examples/RedirectProxy.hs

@@ -7,22 +7,26 @@ module Main (main) where
 import "base" Data.Maybe (maybe)
 import "base" Data.Monoid ((<>))
 import "bytestring" Data.ByteString.Char8 (pack, unpack)
-import "http-proxy" Network.HTTP.Proxy (runProxySettings, defaultProxySettings, Settings(..), Request(..))
+import "http-proxy" Network.HTTP.Proxy
+  (runProxySettings, defaultProxySettings, Settings(..), Request(..))
 import "http-types" Network.HTTP.Types (status302)
-import "https-everywhere-rules" Data.HTTPSEverywhere.Rules (getRulesets, rewriteURL, RuleSet)
+import "https-everywhere-rules" Data.HTTPSEverywhere.Rules (rewriteURL)
 import "network-uri" Network.URI (URI, parseURI)
 import "wai" Network.Wai (Response, responseLBS)
 
 httpRedirect :: URI -> Response
-httpRedirect to = responseLBS status302 [("Location", pack . show $ to)] ""
+httpRedirect to =
+  responseLBS status302 [("Location", pack . show $ to)] ""
 
-tryHTTPS :: [RuleSet] -> Request -> Either Response Request
+tryHTTPS :: Request -> Either Response Request
-tryHTTPS rs Request{..} = case parseURI . unpack $ requestPath <> queryString of
+tryHTTPS Request{..} =
-  Just uri -> maybe (return Request{..}) (Left . httpRedirect) (rewriteURL rs uri)
+  case parseURI . unpack $ requestPath <> queryString of
-  Nothing -> return Request{..}
+    Just uri -> maybe
+      (return Request{..})
+      (Left . httpRedirect)
+      (rewriteURL uri)
+    Nothing -> return Request{..}
 
 main :: IO ()
-main = do
+main = runProxySettings $ defaultProxySettings
-  rules <- getRulesets
+  { proxyRequestModifier = return . tryHTTPS }
-  runProxySettings $ defaultProxySettings
-    { proxyRequestModifier = return . tryHTTPS rules }

https-everywhere-rules.cabal

@@ -13,7 +13,7 @@ license-file:
 author:
   vi
 maintainer:
-  vi@zalora.com
+  vi@computational.law
 category:
   Data
 build-type:
@@ -624,26 +624,33 @@ library
     Data.HTTPSEverywhere.Rules.Internal,
     Data.HTTPSEverywhere.Rules.Internal.Parser,
     Data.HTTPSEverywhere.Rules.Internal.Raw,
+    Data.HTTPSEverywhere.Rules.Internal.Trie,
+    Data.HTTPSEverywhere.Rules.Internal.Trie.Supercompilation,
     Data.HTTPSEverywhere.Rules.Internal.Types,
+    Data.HTTPSEverywhere.Rules.Internal.Types.Serialisable,
+    Data.ByteString.RadixTrie,
+    Data.Text.RadixTrie,
     Data.Text.ICU.Extras,
     Paths_https_everywhere_rules
   build-depends:
-    base               >= 4.7  && < 4.10,
+    base,
-    attoparsec         >= 0.12 && < 0.14,
+    attoparsec,
-    directory          >= 1.2  && < 1.4,
+    bytestring,
-    errors             >= 1.4  && < 2.2,
+    directory,
-    filepath           >= 1.3  && < 1.5,
+    errors,
-    functor-infix      >= 0.0  && < 0.1,
+    filepath,
-    http-client        >= 0.3  && < 0.6,
+    http-client,
-    lens               >= 4.3  && < 4.16,
+    lens,
-    mtl                >= 2.2  && < 2.3,
+    mtl,
-    network            >= 2.6  && < 2.7,
+    network,
-    network-uri        >= 2.6  && < 2.7,
+    network-uri,
-    pipes              >= 4.1  && < 4.4,
+    pipes,
-    string-conversions >= 0.3  && < 0.5,
+    taggy-lens,
-    taggy-lens         >= 0.1  && < 0.2,
+    template-haskell,
-    text               >= 1.1  && < 1.3,
+    th-lift-instances,
-    text-icu           >= 0.6  && < 0.8
+    text,
+    text-icu,
+    vector
   hs-source-dirs:
     src
   default-language:
@@ -655,24 +662,13 @@ test-suite spec
   type:
     exitcode-stdio-1.0
   build-depends:
-    base               >= 4.7  && < 4.10,
+    base,
-    attoparsec         >= 0.12 && < 0.14,
+    attoparsec,
-    directory          >= 1.2  && < 1.4,
+    directory,
-    errors             >= 1.4  && < 2.2,
+    errors,
-    filepath           >= 1.3  && < 1.5,
+    hspec,
-    functor-infix      >= 0.0  && < 0.1,
+    text,
-    hspec              >= 2.0  && < 2.5,
+    text-icu
-    http-client        >= 0.3  && < 0.6,
-    lens               >= 4.3  && < 4.16,
-    mtl                >= 2.2  && < 2.3,
-    network            >= 2.6  && < 2.7,
-    network-uri        >= 2.6  && < 2.7,
-    pipes              >= 4.1  && < 4.4,
-    string-conversions >= 0.3  && < 0.5,
-    taggy-lens         >= 0.1  && < 0.2,
-    text               >= 1.1  && < 1.3,
-    text-icu           >= 0.6  && < 0.8,
-    https-everywhere-rules
   main-is:
     Spec.hs
   hs-source-dirs:
@@ -685,12 +681,6 @@ test-suite spec
   ghc-options:
     -Wall
   other-modules:
-    Data.HTTPSEverywhere.Rules.Internal,
-    Data.HTTPSEverywhere.Rules.Internal.Parser,
-    Data.HTTPSEverywhere.Rules.Internal.ParserSpec,
-    Data.HTTPSEverywhere.Rules.Internal.Raw,
-    Data.HTTPSEverywhere.Rules.Internal.Types,
-    Data.HTTPSEverywhere.Rules.InternalSpec,
     Data.Text.ICU.Extras,
     Data.Text.ICU.ExtrasSpec
 
@@ -709,7 +699,7 @@ executable redirect-proxy
     RedirectProxy.hs
   if flag(build-examples)
     build-depends:
-      base >= 4.7  && < 4.10,
+      base,
       bytestring,
       http-proxy,
       http-types,

src/Data/ByteString/RadixTrie.hs

@@ -0,0 +1,146 @@
+{-# LANGUAGE DeriveFunctor                 #-}
+{-# LANGUAGE DeriveLift                    #-}
+{-# LANGUAGE OverloadedStrings             #-}
+{-# LANGUAGE RecordWildCards               #-}
+{-# LANGUAGE TupleSections                 #-}
+{-# LANGUAGE ViewPatterns                  #-}
+{-# OPTIONS_GHC -fno-warn-unused-top-binds #-}
+
+module Data.ByteString.RadixTrie (
+  RadixTrie,
+  empty,
+  lookup,
+  lookupDefault,
+  elem,
+  enumerate,
+  singleton,
+  insert,
+) where
+
+import Prelude hiding
+  (null, lookup, drop, length, head, tail, take, length, last, elem)
+import Data.ByteString
+  (ByteString, uncons, isPrefixOf, null, drop, length, head, tail,
+   take, length, last, append, cons)
+import Data.Maybe (fromMaybe, isJust, maybeToList)
+import Data.Vector (Vector, (!), generate, modify, imap)
+import qualified Data.Vector as Vector (toList)
+import qualified Data.Vector.Mutable as Mutable (modify)
+import Language.Haskell.TH.Syntax (Lift)
+import Instances.TH.Lift ()
+
+data Leaf a =
+  Prefix ByteString (RadixTrie a) |
+  Split (Vector {- 2 ^ 8 -} (Maybe (RadixTrie a))) |
+  Vacuum deriving (Lift, Show, Functor)
+
+data RadixTrie a =
+  RadixTrie { label :: Maybe a, children :: Leaf a }
+  deriving (Lift, Show, Functor)
+
+empty :: RadixTrie a
+empty = RadixTrie Nothing Vacuum
+
+lookup :: ByteString -> (RadixTrie a -> Maybe a)
+lookup str RadixTrie{..}
+  | null str = label
+  | otherwise = case children of
+      Prefix prefix child ->
+        if prefix `isPrefixOf` str
+        then drop (length prefix) str `lookup` child
+        else Nothing
+      Split vector -> do
+        (c, cs) <- uncons str
+        trie <- vector ! fromIntegral c
+        lookup cs trie
+      Vacuum -> Nothing
+
+lookupDefault :: a -> ByteString -> (RadixTrie a -> a)
+lookupDefault def = fmap (fmap (fromMaybe def)) lookup
+
+elem :: ByteString -> (RadixTrie a -> Bool)
+elem = fmap (fmap isJust) lookup
+
+enumerate :: RadixTrie a -> [(ByteString, a)]
+enumerate (RadixTrie label (Prefix prefix trie)) =
+  maybe [] (\x -> [("", x)]) label ++
+  map (\(x, y) -> (prefix `append` x, y)) (enumerate trie)
+enumerate (RadixTrie label (Split vector)) =
+  maybe [] (\x -> [("", x)]) label ++
+  concat (Vector.toList
+          (imap (\i t -> maybe []
+                  (map (\(x, y) ->
+                          (cons (fromIntegral i) x, y)) . enumerate) t)
+            vector))
+enumerate (RadixTrie a Vacuum) = map ("",) (maybeToList a)
+
+(?=) :: Eq a => a -> a -> Maybe ()
+m ?= n = if m == n then return () else Nothing
+
+singleton' :: ByteString -> (RadixTrie a -> RadixTrie a)
+singleton' str end
+  | null str = end
+  | length str == 1 = empty { children =
+      Split . generate (2 ^ (8 :: Int)) $ \i -> do
+        _ <- fromIntegral i ?= head str
+        return end }
+  | otherwise = empty { children = Prefix str end }
+
+singleton :: ByteString -> a -> RadixTrie a
+singleton str value = singleton' str (empty { label = return value })
+
+data PrefixResult =
+  Equal |
+  Disjoint |
+  Extends ByteString |
+  Prefixes ByteString
+
+prefixResult :: ByteString -> ByteString -> PrefixResult
+prefixResult source target =
+  case (source `isPrefixOf` target, target `isPrefixOf` source) of
+    (True, True) -> Equal
+    (False, False) -> Disjoint
+    (True, False) -> Extends $ drop (length source) target
+    (False, True) -> Prefixes $ drop (length target) source
+
+update :: Int -> (Maybe a -> a) -> (Vector (Maybe a) -> Vector (Maybe a))
+update n f v = modify (\v' -> Mutable.modify v' (Just . f) n) v
+
+insert :: ByteString -> a -> (RadixTrie a -> RadixTrie a)
+insert (uncons -> Just (fromIntegral -> c, cs)) val
+  r@(RadixTrie _ (Split split)) = r { children = Split $
+    update c (maybe (singleton cs val) (insert cs val)) split }
+insert _ val r@(RadixTrie _ (Split _)) = r { label = return val }
+insert text val r@(RadixTrie label (Prefix prefix trie)) =
+  case prefixResult prefix text of
+    Equal -> r { children = Prefix text trie }
+    Extends e -> r { children = Prefix prefix $ insert e val trie }
+    Disjoint ->
+      r { children = Split . generate (2 ^ (8 :: Int)) $ \i ->
+            if i == fromIntegral (head text)
+            then return $ singleton (tail text) val
+            else if i == fromIntegral (head prefix)
+            then return $ singleton' (tail prefix) trie
+            else Nothing }
+    Prefixes p -> case length text of
+      0 -> r { label = return val }
+      1 -> r { children = Split . generate (2 ^ (8 :: Int)) $ \i ->
+                 if i == fromIntegral (head text) then
+                   return $ singleton (tail text) val
+                 else if i == fromIntegral (head prefix) then
+                   return $ singleton' (tail prefix) trie
+                 else Nothing }
+      _ -> RadixTrie label . Prefix (take (length text) prefix) $
+           case length prefix - length text of
+             0 -> error "The impossible happened!"
+             1 -> RadixTrie (Just val)
+               (Split . generate (2 ^ (8 :: Int)) $ \i ->
+                 fmap (const trie) (i ?= fromIntegral (last prefix)))
+             _ -> RadixTrie (Just val) (Prefix p trie)
+insert text val (RadixTrie value Vacuum) =
+  (singleton' text (empty { label = return val })) { label = value }
+
+example :: RadixTrie ByteString
+example = foldr (.) id insertions empty where
+  insertions =
+    map (\x -> insert x x) ["test", "slow", "slower", "water"]

src/Data/HTTPSEverywhere/Rules.hs

@@ -1,29 +1,22 @@
 module Data.HTTPSEverywhere.Rules (
-  RuleSet,
+  RuleTrie,
-  getRulesets,
   rewriteURL,
   rewriteCookie
 ) where
 
-import Prelude hiding (null, head)
-import Data.Bool (bool)
-import Data.Functor.Infix ((<$$>), (<$$$>))
-import Network.HTTP.Client (Cookie)
 import Network.URI (URI)
-import Pipes ((>->))
+import Data.Monoid (First(..), Any(..))
-import Pipes.Prelude (head, null)
+import Data.Bool (bool)
-import Control.Monad.Identity (Identity(runIdentity))
+import Network.HTTP.Client (Cookie(..))
-import Data.HTTPSEverywhere.Rules.Internal (getRulesets, getRulesetsMatching, havingRulesThatTrigger, havingCookieRulesThatTrigger, setSecureFlag, RuleSet)
 
-rewriteURL' :: Monad m => [RuleSet] -> URI -> m (Maybe URI)
+import Data.HTTPSEverywhere.Rules.Internal
-rewriteURL' rs url = head $ getRulesetsMatching rs url >-> havingRulesThatTrigger url
 
-rewriteURL :: [RuleSet] -> (URI -> Maybe URI)
+rewriteURL :: URI -> Maybe URI
-rewriteURL = runIdentity <$$> rewriteURL'
+rewriteURL uri = getFirst . mconcat $
+  map (First . havingRulesThatTrigger uri) (getRulesetsMatching uri)
 
-rewriteCookie' :: Monad m => [RuleSet] -> URI -> Cookie -> m (Maybe Cookie)
+rewriteCookie :: URI -> (Cookie -> Maybe Cookie)
-rewriteCookie' rs url cookie = Just (setSecureFlag cookie) `bool` Nothing <$> null producer
+rewriteCookie uri cookie =
-  where producer = getRulesetsMatching rs url >-> havingCookieRulesThatTrigger cookie
+  bool Nothing (Just $ setSecureFlag cookie) . getAny . mconcat $
-
+    map (Any . havingCookieRulesThatTrigger cookie)
-rewriteCookie :: [RuleSet] -> URI -> (Cookie -> Maybe Cookie)
+      (getRulesetsMatching uri)
-rewriteCookie = runIdentity <$$$> rewriteCookie'

src/Data/HTTPSEverywhere/Rules/Internal.hs

@@ -1,71 +1,49 @@
-{-# LANGUAGE CPP #-}
+{-# LANGUAGE TemplateHaskell #-}
-
+{-# LANGUAGE RecordWildCards #-}
+ 
 module Data.HTTPSEverywhere.Rules.Internal (
-  getRulesets,
+  RuleTrie,
   getRulesetsMatching,
   havingRulesThatTrigger,
   havingCookieRulesThatTrigger,
-  setSecureFlag,
+  setSecureFlag
-  RuleSet,
-#ifdef TEST
-  hasTargetMatching,
-  hasTriggeringRuleOn,
-  hasExclusionMatching
-#endif
 ) where
 
-import Prelude hiding (readFile, filter)
+import Control.Monad (MonadPlus(..))
-import Control.Applicative ((<*>), (<$>))
+import Data.Text (pack)
-import Control.Lens ((&))
+import Data.Maybe (maybeToList)
-import Control.Monad ((<=<), join)
+import Data.Monoid (First(..))
-import Data.Bool (bool)
-import Data.Functor.Infix ((<$$>))
-import Data.List (find)
-import Data.Maybe (isJust)
 import Network.HTTP.Client (Cookie(..))
-import Network.URI (URI)
+import Network.URI (URI, uriAuthority, uriRegName)
-import Pipes (Pipe, Producer, for, each, await, yield, lift, (>->))
-import Pipes.Prelude (filter, toListM)
 
-import Data.HTTPSEverywhere.Rules.Internal.Parser (parseRuleSets)
+import Data.HTTPSEverywhere.Rules.Internal.Trie (RuleTrie)
-import qualified Data.HTTPSEverywhere.Rules.Internal.Raw as Raw (getRule, getRules)
+import qualified Data.HTTPSEverywhere.Rules.Internal.Trie as Trie
-import Data.HTTPSEverywhere.Rules.Internal.Types (RuleSet(..), Target(..), Exclusion(..), Rule(..), CookieRule(..))
+import Data.HTTPSEverywhere.Rules.Internal.Types
+  (RuleSet(..), getRule, getExclusion, getCookieRule)
+import qualified Data.HTTPSEverywhere.Rules.Internal.Trie.Supercompilation
+  as Supercompilation (trie)
 
-getRulesets' :: Producer RuleSet IO ()
+trie :: RuleTrie
-getRulesets' = lift Raw.getRules
+trie = $(Supercompilation.trie)
-           >>= flip (for . each) (flip (for . each) yield <=< lift . (parseRuleSets <$$> Raw.getRule))
 
-getRulesets :: IO [RuleSet]
+unless :: MonadPlus m => Bool -> m a -> m a
-getRulesets = toListM getRulesets'
+unless True action = action
+unless False _ = mzero
 
-getRulesetsMatching :: Monad m => [RuleSet] -> URI -> Producer RuleSet m ()
+getRulesetsMatching :: URI -> [RuleSet]
-getRulesetsMatching rs url = each rs
+getRulesetsMatching uri = do
-                         >-> filter (flip hasTargetMatching url)
+  let hostname = fmap (pack . uriRegName) (uriAuthority uri)
-                         >-> filter (not . flip hasExclusionMatching url)
+  r@RuleSet{..} <- maybeToList hostname >>= Trie.lookup trie
+  unless (any (\e -> getExclusion e uri) ruleSetExclusions) $
+    return r
 
-havingRulesThatTrigger :: Monad m => URI -> Pipe RuleSet URI m ()
+havingRulesThatTrigger :: URI -> RuleSet -> Maybe URI
-havingRulesThatTrigger url = flip hasTriggeringRuleOn url <$> await 
+havingRulesThatTrigger uri RuleSet{..} =
-                         >>= maybe (havingRulesThatTrigger url) yield
+  getFirst . mconcat $ map (First . ($ uri) . getRule) ruleSetRules
 
-havingCookieRulesThatTrigger :: Monad m => Cookie -> Pipe RuleSet Bool m ()
+havingCookieRulesThatTrigger :: Cookie -> RuleSet -> Bool
-havingCookieRulesThatTrigger cookie = flip hasTriggeringCookieRuleOn cookie <$> await
+havingCookieRulesThatTrigger cookie RuleSet{..} =
-                                  >>= bool (havingCookieRulesThatTrigger cookie) (yield True)
+  any (($ cookie) . getCookieRule) ruleSetCookieRules
-
-hasTargetMatching :: RuleSet -> URI -> Bool
-hasTargetMatching ruleset url = getTargets ruleset <*> [url] & or
-  where getTargets = getTarget <$$> ruleSetTargets
-
-hasExclusionMatching :: RuleSet -> URI -> Bool
-hasExclusionMatching ruleset url = getExclusions ruleset <*> [url] & or
-  where getExclusions = getExclusion <$$> ruleSetExclusions
-
-hasTriggeringRuleOn :: RuleSet -> URI -> Maybe URI -- Nothing ~ False
-hasTriggeringRuleOn ruleset url = getRules ruleset <*> [url] & find isJust & join
-  where getRules = getRule <$$> ruleSetRules
-
-hasTriggeringCookieRuleOn :: RuleSet -> Cookie -> Bool
-hasTriggeringCookieRuleOn ruleset cookie = getCookieRules ruleset <*> [cookie] & or
-  where getCookieRules = getCookieRule <$$> ruleSetCookieRules
 
 setSecureFlag :: Cookie -> Cookie
 setSecureFlag cookie = cookie { cookie_secure_only = True }

src/Data/HTTPSEverywhere/Rules/Internal/Parser.hs

@@ -1,74 +1,61 @@
-{-# LANGUAGE CPP                 #-}
+{-# LANGUAGE OverloadedStrings           #-}
-{-# LANGUAGE OverloadedStrings   #-}
+{-# OPTIONS_GHC -fno-warn-name-shadowing #-}
-{-# LANGUAGE RecordWildCards     #-}
-{-# LANGUAGE LambdaCase          #-}
 
 module Data.HTTPSEverywhere.Rules.Internal.Parser (
   parseRuleSets,
-#ifdef TEST
+  parseSerialisable
-  parseTarget
-#endif
 ) where
 
 import Prelude hiding (take, drop)
 import Control.Applicative ((<$>))
 import Control.Lens (toListOf, only, to, (^..), (^.), (&), (<&>), _Just)
-import Control.Monad (join)
-import Control.Monad.State (State, evalState, modify', gets)
-import Data.Bifunctor (bimap)
-import Data.Bool (bool)
-import Data.Functor.Infix ((<$$>))
 import Data.Maybe (catMaybes)
-import Data.String.Conversions (cs)
-import qualified Data.Text as Strict (Text)
-import Data.Text (dropEnd, dropWhileEnd, drop, isSuffixOf, takeEnd, take)
 import qualified Data.Text.Lazy as Lazy (Text)
-import Network.HTTP.Client (Cookie(..))
-import Network.URI (URI(uriAuthority), URIAuth(uriRegName), parseURI)
 import Text.Taggy.Lens (html, allNamed, attr, Element)
 
-import Data.HTTPSEverywhere.Rules.Internal.Types (RuleSet(..), Target(..), Rule(..), Exclusion(..), CookieRule(..))
+import Data.HTTPSEverywhere.Rules.Internal.Types
-import Data.Text.ICU.Extras (match, findAndReplace)
+  (RuleSet(..), fromSerialisable)
+import qualified
+  Data.HTTPSEverywhere.Rules.Internal.Types.Serialisable as Serialisable
+
+parseRule :: Element -> Maybe Serialisable.Rule
+parseRule element = Serialisable.Rule
+  <$> element ^. attr "from"
+  <*> element ^. attr "to"
+
+parseCookieRule :: Element -> Maybe Serialisable.CookieRule
+parseCookieRule element = Serialisable.CookieRule
+  <$> element ^. attr "host"
+  <*> element ^. attr "name"
+
+parseSerialisable' :: Element -> Maybe Serialisable.RuleSet
+parseSerialisable' txt = txt ^. attr "name" <&> \ruleSetName -> do
+   let
+     ruleSetTargets = txt ^.. allNamed (only "target")
+       . attr "host"
+       . _Just
+       . to Serialisable.Target
+     ruleSetRules = txt ^.. allNamed (only "rule")
+       . to parseRule
+       & catMaybes
+     ruleSetExclusions = txt ^.. allNamed (only "exclusion")
+       . attr "pattern"
+       . _Just
+       . to Serialisable.Exclusion
+     ruleSetCookieRules = txt ^.. allNamed (only "securecookie")
+       . to parseCookieRule
+       & catMaybes
+   Serialisable.RuleSet
+     ruleSetName
+     ruleSetTargets
+     ruleSetRules
+     ruleSetExclusions
+     ruleSetCookieRules
+
+parseSerialisable :: Lazy.Text -> [Serialisable.RuleSet]
+parseSerialisable = fmap catMaybes `fmap` toListOf $
+  html . allNamed (only "ruleset") . to parseSerialisable'
 
 parseRuleSets :: Lazy.Text -> [RuleSet]
-parseRuleSets = catMaybes <$$> toListOf $ html . allNamed (only "ruleset") . to parseRuleSet
+parseRuleSets = fmap fromSerialisable . parseSerialisable
 
-parseRuleSet :: Element -> Maybe RuleSet
-parseRuleSet xml = xml ^. attr "name" <&> \ruleSetName -> do
-  let ruleSetTargets     = xml ^.. allNamed (only "target") . attr "host" . _Just . to parseTarget
-      ruleSetRules       = xml ^.. allNamed (only "rule") . to parseRule & catMaybes
-      ruleSetExclusions  = xml ^.. allNamed (only "exclusion") . attr "pattern" . _Just . to parseExclusion & catMaybes
-      ruleSetCookieRules = xml ^.. allNamed (only "securecookie") . to parseCookieRule & catMaybes
-  RuleSet ruleSetName ruleSetTargets ruleSetRules ruleSetExclusions ruleSetCookieRules
-
-parseTarget' :: State (Strict.Text, Strict.Text) Bool
-parseTarget' = do
-  gets ((== ".*") . takeEnd 2 . fst) >>= bool (return ())
-    (modify' (bimap (dropEnd 2) (dropEnd 1 . dropWhileEnd (/= '.'))))
-  gets (take 2 . fst) >>= \case
-    "*." -> do
-      suffix <- gets (drop 1 . fst) -- Don't drop the dot, we expect some prefix.
-      isSuffixOf suffix <$> gets snd
-    _ -> gets (uncurry (==))
-
-parseTarget :: Strict.Text -> Target
-parseTarget target = Target $ \uri -> do
-  case uriRegName <$> uriAuthority uri of
-    Just domain -> evalState parseTarget' (target, cs domain)
-    Nothing -> False
-
-parseRule :: Element -> Maybe Rule
-parseRule element = do
-  pattern     <- element ^. attr "from"
-  replacement <- element ^. attr "to"
-  substitute  <- findAndReplace pattern replacement 
-  return . Rule $ join . fmap (parseURI . cs) . substitute . cs . show
-
-parseExclusion :: Strict.Text -> Maybe Exclusion
-parseExclusion = Exclusion . (. cs . show) <$$> match
-
-parseCookieRule :: Element -> Maybe CookieRule
-parseCookieRule element = CookieRule <$> do
-  hostMatches <- element ^. attr "host" . to (>>= match)
-  nameMatches <- element ^. attr "name" . to (>>= match)
-  return $ \Cookie{..} -> nameMatches (cs cookie_name) && hostMatches (cs cookie_domain)

src/Data/HTTPSEverywhere/Rules/Internal/Raw.hs

@@ -4,7 +4,6 @@ module Data.HTTPSEverywhere.Rules.Internal.Raw (
 ) where
 
 import Prelude hiding (readFile)
-import Data.Functor.Infix ((<$$>))
 import Data.Text.Lazy (Text)
 import Data.Text.Lazy.IO (readFile)
 import System.Directory (getDirectoryContents)
@@ -16,8 +15,8 @@ getRule :: FilePath -> IO Text
 getRule = readFile
 
 getRules :: IO [FilePath]
-getRules = getDataFileName [] >>= filter isXML <$$> getAbsoluteDirectoryContents
+getRules = getDataFileName [] >>= fmap (filter isXML) <$> getAbsoluteDirectoryContents
   where isXML = (== ".xml") . takeExtension
 
 getAbsoluteDirectoryContents :: FilePath -> IO [FilePath]
-getAbsoluteDirectoryContents x = combine x <$$> getDirectoryContents x
+getAbsoluteDirectoryContents x = fmap (combine x) <$> getDirectoryContents x

src/Data/HTTPSEverywhere/Rules/Internal/Trie.hs

@@ -0,0 +1,89 @@
+{-# LANGUAGE DeriveFunctor       #-}
+{-# LANGUAGE TupleSections       #-}
+{-# LANGUAGE RecordWildCards     #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE OverloadedStrings   #-}
+{-# LANGUAGE DeriveLift          #-}
+
+module Data.HTTPSEverywhere.Rules.Internal.Trie (
+  RuleTrie,
+  RuleSet,
+  empty,
+  insert,
+  lookup,
+  enumerate
+) where
+
+import Prelude hiding (lookup, null)
+import Data.Maybe (fromMaybe, maybeToList)
+import Data.Text (Text, null, split, snoc, append)
+import Language.Haskell.TH.Syntax (Lift)
+
+import Data.Text.RadixTrie (RadixTrie)
+import qualified Data.Text.RadixTrie as RadixTrie
+import qualified
+  Data.HTTPSEverywhere.Rules.Internal.Types as Types
+
+data Trie a = Trie
+  { rule :: Maybe a -- set if terminal
+  , wildcard :: Maybe a
+  , children :: RadixTrie (Trie a)
+  } deriving (Show, Functor, Lift)
+
+data RuleSet a = RuleSet { wild :: Trie a, tame :: Trie a }
+  deriving (Show, Functor, Lift)
+
+type RuleTrie = RuleSet Types.RuleSet
+
+snoc' :: Text -> Char -> Text
+snoc' txt c = if null txt then txt else snoc txt c
+
+enumerate' :: Trie a -> [(Text, a)]
+enumerate' (Trie r w c) =
+  maybe [] (\x -> [("",  x)]) r ++
+  maybe [] (\x -> [("*", x)]) w ++
+  concatMap (\(x, y) -> map (\(a, b) -> (append (snoc' a '.') x, b)) (enumerate' y)) (RadixTrie.enumerate c)
+
+enumerate :: RuleSet a -> [(Text, a)]
+enumerate (RuleSet wild tame) =
+  (map (\(x, y) -> (append x ".*", y)) (enumerate' wild)) ++
+  enumerate' tame
+
+emptyTrie :: Trie a
+emptyTrie = Trie Nothing Nothing RadixTrie.empty
+
+empty :: RuleSet a
+empty = RuleSet emptyTrie emptyTrie
+
+isDot :: Char -> Bool
+isDot = (== '.')
+
+insert' :: ([Text], a) -> (Trie a -> Trie a)
+insert' ([], a) trie = trie { rule = return a }
+insert' (t : ts, a) trie
+  | t == "*" = trie { wildcard = return a }
+  | otherwise = trie { children =
+                         RadixTrie.insert t
+                         (insert' (ts, a)
+                          (RadixTrie.lookupDefault emptyTrie
+                           t (children trie)))
+                         (children trie) }
+
+insert :: (Text, a) -> (RuleSet a -> RuleSet a)
+insert (s, a) rs =
+  let parts@(_:_) = reverse (split isDot s) in
+  if head parts == "*"
+    then rs { wild = insert' (tail parts, a) (wild rs) }
+    else rs { tame = insert' (parts, a) (tame rs) }
+
+lookup' :: Trie a -> ([Text] -> [a])
+lookup' (Trie rule _ _) [] = maybeToList rule
+lookup' (Trie _ wild children) (sub : subsub) =
+  fromMaybe [] (fmap (flip lookup' subsub)
+                (sub `RadixTrie.lookup` children)) ++
+  maybeToList wild
+
+lookup :: RuleSet a -> (Text -> [a])
+lookup RuleSet{..} host =
+  let parts@(_:_) = reverse (split isDot host) in
+  lookup' tame parts ++ lookup' wild (tail parts)

src/Data/HTTPSEverywhere/Rules/Internal/Trie/Supercompilation.hs

@@ -0,0 +1,41 @@
+{-# LANGUAGE TemplateHaskell #-}
+
+module Data.HTTPSEverywhere.Rules.Internal.Trie.Supercompilation (
+  trie
+) where
+
+import Control.Monad ((<=<))
+import Pipes (Producer, for, each, yield, lift)
+import Pipes.Prelude (fold)
+import Language.Haskell.TH
+
+import Data.HTTPSEverywhere.Rules.Internal.Parser (parseSerialisable)
+import qualified Data.HTTPSEverywhere.Rules.Internal.Raw as Raw
+  (getRule, getRules)
+import qualified
+  Data.HTTPSEverywhere.Rules.Internal.Types.Serialisable as Serialisable
+import Data.HTTPSEverywhere.Rules.Internal.Trie (RuleSet, empty, insert)
+import qualified
+  Data.HTTPSEverywhere.Rules.Internal.Types as Types
+
+getRulesets :: Producer Serialisable.RuleSet IO ()
+getRulesets = lift Raw.getRules >>= (flip (for . each) (flip (for . each) yield <=< lift . (fmap parseSerialisable `fmap` Raw.getRule)))
+
+getTrie :: IO (RuleSet Serialisable.RuleSet)
+getTrie = fold
+  (\tree rule ->
+     foldr (.) id
+     (map
+      (\target -> insert (Serialisable.targetHost target, rule))
+      (Serialisable.ruleSetTargets rule))
+     tree)
+  empty
+  id
+  getRulesets
+
+-- getTrie :: IO RuleTrie
+-- getTrie = fmap (fmap Types.fromSerialisable) getTrie'
+
+trie :: Q Exp {- :: RuleTrie -}
+trie = runIO getTrie >>= \t ->
+  [| fmap Types.fromSerialisable t |]

src/Data/HTTPSEverywhere/Rules/Internal/Types.hs

@@ -1,14 +1,31 @@
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE LambdaCase        #-}
+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE RecordWildCards   #-}
+
 module Data.HTTPSEverywhere.Rules.Internal.Types (
   RuleSet(..),
   Target(..),
   Rule(..),
   Exclusion(..),
-  CookieRule(..)
+  CookieRule(..),
+  fromSerialisable
 ) where
 
-import Data.Text (Text)
+import Prelude hiding (take, drop)
-import Network.HTTP.Client (Cookie)
+import Control.Monad (join)
-import Network.URI (URI)
+import Control.Monad.State (State, evalState, modify', gets)
+import Data.Bool (bool)
+import Data.Bifunctor (bimap)
+import Data.Maybe (catMaybes)
+import Data.Text (Text, take, takeEnd, drop, dropEnd, dropWhileEnd, isSuffixOf, pack, unpack)
+import Data.Text.Encoding (decodeUtf8)
+import Network.HTTP.Client (Cookie(..))
+import Network.URI (URI, uriRegName, uriAuthority, parseURI)
+
+import qualified Data.HTTPSEverywhere.Rules.Internal.Types.Serialisable
+  as Serialisable
+import Data.Text.ICU.Extras (match, findAndReplace)
 
 newtype Rule       = Rule       { getRule :: URI -> Maybe URI     }
 newtype Target     = Target     { getTarget :: URI  -> Bool       }
@@ -22,3 +39,48 @@ data RuleSet = RuleSet
   , ruleSetExclusions  :: [Exclusion]
   , ruleSetCookieRules :: [CookieRule]
   }
+
+instance Show RuleSet where
+  show r = "<RuleSet " ++ unpack (ruleSetName r) ++ ">"
+
+parseTarget' :: State (Text, Text) Bool
+parseTarget' = do
+  gets ((== ".*") . takeEnd 2 . fst) >>= bool (return ())
+    (modify' (bimap (dropEnd 2) (dropEnd 1 . dropWhileEnd (/= '.'))))
+  gets (take 2 . fst) >>= \case
+    "*." -> do
+      suffix <- gets (drop 1 . fst) -- Don't drop the dot, we expect
+                                    -- some prefix.
+      isSuffixOf suffix <$> gets snd
+    _ -> gets (uncurry (==))
+
+parseTarget :: Text -> Target
+parseTarget target = Target $ \uri -> do
+  case uriRegName <$> uriAuthority uri of
+    Just domain -> evalState parseTarget' (target, pack domain)
+    Nothing -> False
+
+parseExclusion :: Text -> Maybe Exclusion
+parseExclusion = fmap (Exclusion . (. pack . show)) `fmap` match
+
+fromSerialisable :: Serialisable.RuleSet -> RuleSet
+fromSerialisable Serialisable.RuleSet{..} = RuleSet
+  { ruleSetName        = ruleSetName
+  , ruleSetTargets     =
+      map (parseTarget . Serialisable.targetHost) ruleSetTargets
+  , ruleSetRules = catMaybes . flip map ruleSetRules $
+      \Serialisable.Rule{..} -> do
+        substitute <- findAndReplace ruleFrom ruleTo
+        return . Rule $
+          join . fmap (parseURI . unpack) . substitute . pack . show
+  , ruleSetExclusions  = catMaybes $ map
+      (parseExclusion . Serialisable.exclusionPattern)
+      ruleSetExclusions
+  , ruleSetCookieRules = catMaybes . flip map ruleSetCookieRules $
+      \Serialisable.CookieRule{..} -> do
+        hostMatches <- match cookieRuleHost
+        nameMatches <- match cookieRuleName
+        return . CookieRule $ \Cookie{..} ->
+          nameMatches (decodeUtf8 cookie_name) &&
+          hostMatches (decodeUtf8 cookie_domain)
+  }

src/Data/HTTPSEverywhere/Rules/Internal/Types/Serialisable.hs

@@ -0,0 +1,30 @@
+{-# Language DeriveLift #-}
+
+module Data.HTTPSEverywhere.Rules.Internal.Types.Serialisable
+where
+
+import Data.Text (Text)
+import Language.Haskell.TH.Syntax (Lift)
+import Instances.TH.Lift ()
+
+data Rule = Rule { ruleFrom :: Text, ruleTo :: Text }
+  deriving (Show, Lift)
+
+data Target = Target { targetHost :: Text }
+  deriving (Show, Lift)
+
+data Exclusion = Exclusion { exclusionPattern :: Text }
+  deriving (Show, Lift)
+
+data CookieRule = CookieRule
+  { cookieRuleHost :: Text
+  , cookieRuleName :: Text
+  } deriving (Show, Lift)
+
+data RuleSet = RuleSet
+  { ruleSetName :: Text
+  , ruleSetTargets :: [Target]
+  , ruleSetRules :: [Rule]
+  , ruleSetExclusions :: [Exclusion]
+  , ruleSetCookieRules :: [CookieRule]
+  } deriving (Show, Lift)

src/Data/Text/ICU/Extras.hs

@@ -17,7 +17,6 @@ import Control.Applicative ((<$>), (<*>), (*>), (<|>))
 import Control.Error (hush)
 import Data.Attoparsec.Text (Parser, char, digit, takeWhile1, string, many', parseOnly)
 import Data.Char (digitToInt)
-import Data.Functor.Infix ((<$$>), (<&>))
 import Data.Maybe (isJust)
 import Data.Monoid (Monoid(mappend, mconcat))
 import Data.Text (Text)
@@ -27,7 +26,7 @@ regex :: Text -> Maybe Regex
 regex = hush . regex' []
 
 match :: Text -> Maybe (Text -> Bool)
-match = (isJust <$$> find) <$$> regex
+match = fmap (fmap isJust <$> find) <$> regex
 
 findAndReplace :: Text -> Text -> Maybe (Text -> Maybe Text)
 findAndReplace pattern replacement = (.)
@@ -41,7 +40,7 @@ data Segment = Reference Int | Literal Text deriving (Show, Eq)
 -- JavaScript admits at most nine capture groups, so this is the correct
 -- (and likely intended) interpretation.
 parseReference :: Parser Segment
-parseReference = char '$' *> digit <&> Reference . digitToInt
+parseReference = (Reference . digitToInt) <$> (char '$' *> digit)
 
 parseLiteral :: Parser Segment
 parseLiteral = Literal <$> takeWhile1 (/= '$')

src/Data/Text/RadixTrie.hs

@@ -0,0 +1,30 @@
+module Data.Text.RadixTrie (
+  RadixTrie,
+  empty,
+  lookup,
+  lookupDefault,
+  elem,
+  insert,
+  enumerate
+) where
+
+import Prelude hiding (lookup, elem)
+import Data.ByteString.RadixTrie (RadixTrie, empty)
+import qualified Data.ByteString.RadixTrie as RT
+import qualified Data.Text as Strict (Text)
+import Data.Text.Encoding (encodeUtf8, decodeUtf8)
+
+lookup :: Strict.Text -> (RadixTrie a -> Maybe a)
+lookup t r = RT.lookup (encodeUtf8 t) r
+
+lookupDefault :: a -> Strict.Text -> (RadixTrie a -> a)
+lookupDefault x t r = RT.lookupDefault x (encodeUtf8 t) r
+
+elem :: Strict.Text -> (RadixTrie a -> Bool)
+elem t r = RT.elem (encodeUtf8 t) r
+
+insert :: Strict.Text -> a -> (RadixTrie a -> RadixTrie a)
+insert t x r = RT.insert (encodeUtf8 t) x r
+
+enumerate :: RadixTrie a -> [(Strict.Text, a)]
+enumerate t = map (\(x, y) -> (decodeUtf8 x, y)) (RT.enumerate t)

stack.yaml

@@ -1,6 +1,8 @@
 packages:
 - .
 extra-deps:
-- functor-infix-0.0.5
+- taggy-0.2.1
-- http-proxy-0.1.0.5
+- taggy-lens-0.1.2
-resolver: lts-8.24
+- http-proxy-0.1.0.6
+resolver: lts-11.14
+allow-newer: true

test/Data/HTTPSEverywhere/Rules/Internal/ParserSpec.hs

@@ -1,72 +0,0 @@
-{-# LANGUAGE OverloadedStrings    #-}
-{-# OPTIONS_GHC -fno-warn-orphans #-}
-
-module Data.HTTPSEverywhere.Rules.Internal.ParserSpec (
-  spec
-) where
-
-import Prelude hiding (unlines)
-import Data.HTTPSEverywhere.Rules.Internal.Parser (parseTarget, parseRuleSets)
-import Data.HTTPSEverywhere.Rules.Internal (hasTargetMatching, hasExclusionMatching, hasTriggeringRuleOn)
-import Data.HTTPSEverywhere.Rules.Internal.Types (Target(..), RuleSet(..))
-import Data.Maybe (fromJust, isJust)
-import Data.Text.Lazy (Text, unlines)
-import Network.URI (parseURI)
-import Test.Hspec (Spec, describe, it, shouldBe, shouldSatisfy)
-
-spec :: Spec
-spec = do
-  let unsafeParseURL = fromJust . parseURI
-  describe "parseTarget" $ do
-    let checkTarget = \target domain -> ($ domain) . getTarget $ parseTarget target
-    it "*.facebook.com should match s-static.ak.facebook.com" $ do
-      let url = unsafeParseURL "http://s-static.ak.facebook.com"
-      checkTarget "*.facebook.com" url `shouldBe` True
-    it "google.* should match google.nl" $ do
-      let url = unsafeParseURL "http://google.nl"
-      checkTarget "google.*" url `shouldBe` True
-    -- Right-side wildcards apply only one-level deep.
-    it "google.* should not match google.com.id" $ do
-      let url = unsafeParseURL "http://google.com.id"
-      checkTarget "google.*" url `shouldBe` False
-    -- Wildcards expect there exist some prefix.
-    it "*.google.* should not match google.nl" $ do
-      let url = unsafeParseURL "http://google.nl"
-      checkTarget "*.google.*" url `shouldBe` False
-  describe "parseRuleSets" $ do
-    let rulesets = parseRuleSets fixture
-    it "Should parse a ruleset out of the EFF fixture." $ do
-      rulesets `shouldSatisfy` not . null
-    let effRuleSet = head rulesets
-    it "Should parse out the name of the EFF fixture." $ do
-      ruleSetName effRuleSet `shouldBe` "EFF"
-    it "Should parse out two targets from the EFF fixture." $ do
-      length (ruleSetTargets effRuleSet) `shouldBe` 2
-    it "Should parse out two rules from the EFF fixture." $ do
-      length (ruleSetRules effRuleSet) `shouldBe` 2
-    it "Should parse out one exclusion from the EFF fixture." $ do
-      length (ruleSetExclusions effRuleSet) `shouldBe` 1
-    it "A target in the EFF fixture should match eff.org" $ do
-      let url = unsafeParseURL "http://eff.org/thing"
-      effRuleSet `hasTargetMatching` url `shouldBe` True
-    it "A rule in the EFF fixture should trigger on eff.org" $ do
-      let url = unsafeParseURL "http://eff.org/thing"
-      effRuleSet `hasTriggeringRuleOn` url `shouldSatisfy` isJust
-    it "An exclusion in the EFF fixture should trigger on action.eff.org" $ do
-      let url = unsafeParseURL "http://action.eff.org/thing"
-      effRuleSet `hasExclusionMatching` url `shouldBe` True
-
-fixture :: Text
-fixture = unlines $
-  [ "<ruleset name=\"EFF\">"
-  , "  <target host=\"eff.org\" />"
-  , "  <target host=\"*.eff.org\" />"
-  , ""
-  , "  <exclusion pattern=\"^http://action\\.eff\\.org/\"/>"
-  , "  <rule from=\"^http://eff\\.org/\" to=\"https://eff.org/\"/>"
-  , "  <rule from=\"^http://([^/:@]*)\\.eff\\.org/\" to=\"https://$1.eff.org/\"/>"
-  , "</ruleset>"
-  ]
-
-instance Show RuleSet where
-  show _ = "<RuleSet>"

test/Data/HTTPSEverywhere/Rules/InternalSpec.hs

@@ -1,63 +0,0 @@
-{-# LANGUAGE OverloadedStrings #-}
-
-module Data.HTTPSEverywhere.Rules.InternalSpec (
-  spec
-) where
-
-import Prelude hiding (unlines)
-import Control.Monad (join)
-import Data.Functor ((<$>))
-import Data.HTTPSEverywhere.Rules.Internal (hasTargetMatching, hasTriggeringRuleOn, hasExclusionMatching)
-import Data.HTTPSEverywhere.Rules.Internal.Types (RuleSet(..), Target(..), Exclusion(..), Rule(..))
-import Data.Maybe (fromJust, catMaybes)
-import Data.Text (pack, unpack)
-import Data.Text.ICU.Extras (match, findAndReplace)
-import Network.URI (parseURI)
-import Test.Hspec (Spec, describe, it, shouldBe)
-
-spec :: Spec
-spec = do
-  let unsafeParseURL = fromJust . parseURI
-  describe "hasTargetMatching" $ do
-    it "Should be True for matching targets." $ do
-      let url = unsafeParseURL "http://eff.org/thing"
-      fixture `hasTargetMatching` url `shouldBe` True
-    it "Should be False for mis-matching targets." $ do
-      let url = unsafeParseURL "http://gnu.org/thing"
-      fixture `hasTargetMatching` url `shouldBe` False
-  describe "hasTriggeringRuleOn" $ do
-    it "Should be 'Just https://...' for matching rules." $ do
-      let url = unsafeParseURL "http://eff.org/thing"
-      fixture `hasTriggeringRuleOn`  url `shouldBe` parseURI "https://eff.org/thing"
-    it "Should be Nothing for mis-matching rules." $ do
-      let url = unsafeParseURL "http://gnu.org/thing"
-      fixture `hasTriggeringRuleOn` url `shouldBe` Nothing
-  describe "hasExclusionMatching" $ do
-    it "Should be True for matching targets." $ do
-      let url = unsafeParseURL "http://action.eff.org/thing"
-      fixture `hasExclusionMatching` url `shouldBe` True
-    it "Should be False for mis-matching targets." $ do
-      let url = unsafeParseURL "http://eff.org/thing"
-      fixture `hasExclusionMatching` url `shouldBe` False
-
--- We avoid the parser here, for purposes of isolation:
-
-fixture :: RuleSet
-fixture = RuleSet
-  { ruleSetName = "EFF"
-  , ruleSetTargets = catMaybes
-      [ Target . checkURI <$> match "eff\\.org"
-      , Target . checkURI <$> match ".*\\.eff\\.org"
-      ]
-  , ruleSetExclusions = catMaybes
-      [ Exclusion . checkURI <$> match "^http://action\\.eff\\.org/"
-      ]
-  , ruleSetRules = catMaybes
-      [ Rule . changeURI <$> findAndReplace "^http://eff\\.org/" "https://eff.org/"
-      , Rule . changeURI <$> findAndReplace "^http://([^/:@]*)\\.eff\\.org/" "https://$1.eff.org/"
-      ]
-  , ruleSetCookieRules =
-      []
-  } 
-  where checkURI = (. pack . show)
-        changeURI f = join . fmap (parseURI . unpack) . checkURI f

test/Data/Text/ICU/ExtrasSpec.hs

@@ -5,7 +5,6 @@
 module Data.Text.ICU.ExtrasSpec (spec) where
 
 import Control.Applicative ((<$>))
-import Control.Lens ((&))
 import Data.Text (Text)
 import Data.Text.ICU.Extras (match, findAndReplace, Segment(..), parseReplacement)
 import Test.Hspec (Spec, describe, it, shouldBe)
@@ -16,8 +15,8 @@ spec = do
     it "Should be Nothing if provided an invalid regular expression." $ do
       match "(" `shouldBe` Nothing
     it "Should yield a match function if provided a regular expression." $ do
-     ("xa" &) <$> match "x" `shouldBe` Just True
+     ($ "xa") <$> match "x" `shouldBe` Just True
-     ("xa" &) <$> match "y" `shouldBe` Just False
+     ($ "xa") <$> match "y" `shouldBe` Just False
   describe "parseReplacement" $ do
     it "Should decompose a replacement string into a sequence [Segment]." $ do
       parseReplacement "foo$1bar$4$1" `shouldBe` Just [Literal "foo", Reference 1, Literal "bar", Reference 4, Reference 1]
@@ -28,9 +27,9 @@ spec = do
       parseReplacement "$10" `shouldBe` Just [Reference 1, Literal "0"]
   describe "findAndReplace" $ do
     it "Should find and replace based upon a regular expression and pattern." $ do
-      ("barqux" &) <$> findAndReplace "(bar)" "$1baz" `shouldBe` Just (Just "barbazqux")
+      ($ "barqux") <$> findAndReplace "(bar)" "$1baz" `shouldBe` Just (Just "barbazqux")
-      ("barqux" &) <$> findAndReplace "(qux)" "baz$1" `shouldBe` Just (Just "barbazqux")
+      ($ "barqux") <$> findAndReplace "(qux)" "baz$1" `shouldBe` Just (Just "barbazqux")
-      ("barqux" &) <$> findAndReplace "u" "uu" `shouldBe` Just (Just "barquux")
+      ($ "barqux") <$> findAndReplace "u" "uu" `shouldBe` Just (Just "barquux")
 
 instance Show (Text -> Bool) where
   show _ = "Text -> Bool"