From fbd053967c814697ad21fde2dc8e95f7a4683302 Mon Sep 17 00:00:00 2001
From: joe <joe@jerkface.net>
Date: Thu, 20 Jul 2017 00:01:29 -0400
Subject: Update MinMaxPSQ to use HashPSQ.

---
 src/Data/MinMaxPSQ.hs                | 24 ++++++++++++------------
 src/Network/BitTorrent/DHT/Search.hs | 13 ++++++++-----
 2 files changed, 20 insertions(+), 17 deletions(-)

diff --git a/src/Data/MinMaxPSQ.hs b/src/Data/MinMaxPSQ.hs
index 96937604..f41da4a4 100644
--- a/src/Data/MinMaxPSQ.hs
+++ b/src/Data/MinMaxPSQ.hs
@@ -17,48 +17,48 @@ null (MinMaxPSQ nq xq) = PSQ.null nq
 size :: MinMaxPSQ k p -> Int
 size (MinMaxPSQ nq xq) = PSQ.size nq
 
-toList :: (Ord k, Ord p) => MinMaxPSQ k p -> [Binding k p]
+toList :: (PSQKey k, Ord p) => MinMaxPSQ k p -> [Binding k p]
 toList (MinMaxPSQ nq xq) = PSQ.toList nq
 
-fromList :: (Ord k, Ord p) => [Binding k p] -> MinMaxPSQ k p
+fromList :: (PSQKey k, Ord p) => [Binding k p] -> MinMaxPSQ k p
 fromList kps = MinMaxPSQ (PSQ.fromList kps)
                          (PSQ.fromList $ map (\(k :-> p) -> (k :-> Down p)) kps)
 
-findMin :: (Ord k, Ord p) => MinMaxPSQ k p -> Maybe (Binding k p)
+findMin :: (PSQKey k, Ord p) => MinMaxPSQ k p -> Maybe (Binding k p)
 findMin (MinMaxPSQ nq xq) = PSQ.findMin nq
 
-findMax :: (Ord k, Ord p) => MinMaxPSQ k p -> Maybe (Binding k p)
+findMax :: (PSQKey k, Ord p) => MinMaxPSQ k p -> Maybe (Binding k p)
 findMax (MinMaxPSQ nq xq) = fmap (\(k :-> Down p) -> k :-> p) $ PSQ.findMin xq
 
-insert :: (Ord k, Ord p) => k -> p -> MinMaxPSQ k p -> MinMaxPSQ k p
+insert :: (PSQKey k, Ord p) => k -> p -> MinMaxPSQ k p -> MinMaxPSQ k p
 insert k p (MinMaxPSQ nq xq) = MinMaxPSQ (PSQ.insert k p        nq)
                                          (PSQ.insert k (Down p) xq)
 
-delete :: (Ord k, Ord p) => k -> MinMaxPSQ k p -> MinMaxPSQ k p
+delete :: (PSQKey k, Ord p) => k -> MinMaxPSQ k p -> MinMaxPSQ k p
 delete k (MinMaxPSQ nq xq) = MinMaxPSQ (PSQ.delete k nq) (PSQ.delete k xq)
 
-deleteMin :: (Ord k, Ord p) => MinMaxPSQ k p -> MinMaxPSQ k p
+deleteMin :: (PSQKey k, Ord p) => MinMaxPSQ k p -> MinMaxPSQ k p
 deleteMin (MinMaxPSQ nq xq) = case PSQ.minView nq of
     Just (k :-> _, nq') -> MinMaxPSQ nq' (PSQ.delete k xq)
     Nothing             -> MinMaxPSQ nq xq
 
-deleteMax :: (Ord k, Ord p) => MinMaxPSQ k p -> MinMaxPSQ k p
+deleteMax :: (PSQKey k, Ord p) => MinMaxPSQ k p -> MinMaxPSQ k p
 deleteMax (MinMaxPSQ nq xq) = case PSQ.minView xq of
     Just (k :-> _, xq') -> MinMaxPSQ (PSQ.delete k nq) xq'
     Nothing             -> MinMaxPSQ nq xq
 
-minView :: (Ord k, Ord p) => MinMaxPSQ k p -> Maybe (Binding k p, MinMaxPSQ k p)
+minView :: (PSQKey k, Ord p) => MinMaxPSQ k p -> Maybe (Binding k p, MinMaxPSQ k p)
 minView (MinMaxPSQ nq xq) = fmap (\(k :-> p, nq') -> (k :-> p, MinMaxPSQ nq' (PSQ.delete k xq)))
                             $ PSQ.minView nq
 
-maxView :: (Ord k, Ord p) => MinMaxPSQ k p -> Maybe (Binding k p, MinMaxPSQ k p)
+maxView :: (PSQKey k, Ord p) => MinMaxPSQ k p -> Maybe (Binding k p, MinMaxPSQ k p)
 maxView (MinMaxPSQ nq xq) = fmap (\(k :-> Down p, xq') -> (k :-> p, MinMaxPSQ (PSQ.delete k nq) xq'))
                             $ PSQ.minView xq
 
-insertTake :: (Ord k, Ord p) => Int -> k -> p -> MinMaxPSQ k p -> MinMaxPSQ k p
+insertTake :: (PSQKey k, Ord p) => Int -> k -> p -> MinMaxPSQ k p -> MinMaxPSQ k p
 insertTake n k p q = take n $ insert k p q
 
-take :: (Ord k, Ord p) => Int -> MinMaxPSQ k p -> MinMaxPSQ k p
+take :: (PSQKey k, Ord p) => Int -> MinMaxPSQ k p -> MinMaxPSQ k p
 take !n !q | (size q <= n) = q
            | null q        = q
            | otherwise     = take n $ deleteMax q
diff --git a/src/Network/BitTorrent/DHT/Search.hs b/src/Network/BitTorrent/DHT/Search.hs
index 356f6fd9..07240755 100644
--- a/src/Network/BitTorrent/DHT/Search.hs
+++ b/src/Network/BitTorrent/DHT/Search.hs
@@ -23,7 +23,7 @@ import System.IO
 import qualified Data.MinMaxPSQ   as MM
          ;import Data.MinMaxPSQ   (MinMaxPSQ)
 import qualified Data.Wrapper.PSQ as PSQ
-         ;import Data.Wrapper.PSQ (pattern (:->), Binding, PSQ)
+         ;import Data.Wrapper.PSQ (pattern (:->), Binding, PSQ, PSQKey)
 import Network.Address hiding (NodeId)
 import Network.DatagramServer.Types
 import Data.Bits
@@ -39,7 +39,8 @@ data IterativeSearch dht u ip r = IterativeSearch
     }
 
 newSearch :: ( Eq ip
-             , Ord (NodeId dht)
+             , PSQKey (NodeId dht)
+             , PSQKey (NodeInfo dht ip u)
              , FiniteBits (NodeId dht)
              ) => (NodeInfo dht ip u -> IO ([NodeInfo dht ip u], [r]))
                       -> NodeId dht -> [NodeInfo dht ip u] -> IO (IterativeSearch dht u ip r)
@@ -60,7 +61,8 @@ searchK = 8
 sendQuery :: forall a ip dht u.
             ( Ord a
             , Ord ip
-            , Ord (NodeId dht)
+            , PSQKey (NodeId dht)
+            , PSQKey (NodeInfo dht ip u)
             , FiniteBits (NodeId dht)
             ) =>
             IterativeSearch dht u ip a
@@ -85,7 +87,8 @@ sendQuery IterativeSearch{..} (ni :-> d) = do
 
 
 searchIsFinished :: ( Ord ip
-                    , Ord (NodeId dht)
+                    , PSQKey (NodeId dht)
+                    , PSQKey (NodeInfo dht ip u)
                     ) => IterativeSearch dht u ip r -> STM Bool
 searchIsFinished IterativeSearch{..} = do
     q <- readTVar searchQueued
@@ -98,7 +101,7 @@ searchIsFinished IterativeSearch{..} = do
                             <= PSQ.prio (fromJust $ MM.findMin q))))
 
 search ::
-    (Ord r, Ord ip, Ord (NodeId dht), FiniteBits (NodeId dht)) =>
+    (Ord r, Ord ip, PSQKey (NodeId dht), PSQKey (NodeInfo dht ip u), FiniteBits (NodeId dht)) =>
     IterativeSearch dht u ip r -> IO ()
 search s@IterativeSearch{..} = withTaskGroup searchAlpha $ \g -> do
     fix $ \again -> do
-- 
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