1 files changed, 13 insertions, 4 deletions

diff --git a/interactive-edit-lens/src/Main.hs b/interactive-edit-lens/src/Main.hs
index 83c9725..c816515 100644
--- a/interactive-edit-lens/src/Main.hs
+++ b/interactive-edit-lens/src/Main.hs
@@ -1,5 +1,6 @@
 {-# LANGUAGE OverloadedStrings
            , ExistentialQuantification
+           , DeriveGeneric
   #-}
 
 module Main where
@@ -30,18 +31,23 @@ import Debug.Trace
 
 import Data.Universe
 
-data SomeDFST = forall state. (Ord state, Show state, Finite state) => SomeDFST { someDFST :: DFST state Char Char }
+import Control.DeepSeq
+import GHC.Generics (Generic)
+
+data SomeDFST = forall state. (Ord state, Show state, Finite state, NFData (DFSTComplement state Char Char)) => SomeDFST { someDFST :: DFST state Char Char }
 
 data JsonContext = JCInDet | JCDict | JCDictKey | JCDictVal | JCArray | JCArrayVal | JCTop
-  deriving (Eq, Ord, Show, Read, Enum, Bounded)
+  deriving (Eq, Ord, Show, Read, Enum, Bounded, Generic)
 instance Universe JsonContext
 instance Finite JsonContext
 
+instance NFData JsonContext
+
 data JsonNewlState = JNElement JsonContext
                    | JNTrue String JsonContext | JNFalse String JsonContext | JNNull String JsonContext | JNLitEnd JsonContext
                    | JNString JsonContext | JNStringEsc Int JsonContext | JNStringEnd JsonContext
                    | JNNumberDigits Bool JsonContext | JNNumberDecimal JsonContext | JNNumberDecimalDigits Bool JsonContext | JNNumberExpSign JsonContext | JNNumberExpDigits Bool JsonContext | JNNumberEnd JsonContext
-  deriving (Eq, Ord, Show, Read)
+  deriving (Eq, Ord, Show, Read, Generic)
 instance Universe JsonNewlState where
   universe = concat
     [ JNElement <$> universeF
@@ -63,6 +69,8 @@ instance Universe JsonNewlState where
       inits' xs = inits xs \\ [""]
 instance Finite JsonNewlState
 
+instance NFData JsonNewlState
+
 jsonStrEscapes :: [(Char, Seq Char)]
 jsonStrEscapes = [ ('"', "\\\"")
                  , ('\\', "\\\\")
@@ -78,10 +86,11 @@ hexDigits :: [Char]
 hexDigits = ['0'..'9'] ++ ['a'..'f']
 
 data LineBreakState = LineBreak Int
-  deriving (Eq, Ord, Show, Read)
+  deriving (Eq, Ord, Show, Read, Generic)
 instance Universe LineBreakState where
   universe = [ LineBreak n | n <- [0..80] ]
 instance Finite LineBreakState
+instance NFData LineBreakState
 
 dfstMap :: String -> Maybe SomeDFST
 dfstMap "double" = Just . SomeDFST $ DFST